2014届高三数学一轮复习专讲专练(基础知识):2.13导数的应用(二)

letters and calls, a nd do pra ctical t hings for t he masse s com bine g ood, effective through rea chi ng pe ople at the servi ce of the "last mile". T hird, foster t he devel opme nt of new e nergy, new G eneral Se cretary XI Ji npi ng stresse d devel opme nt of innovation forest restructuring, revitalization of the ol d industrial bases i n Northeast Chi na is the State's maj or strategy, Central ha s iss ued compr ehe nsive opi nions of revitalizi ng Nort heast China and other old i ndustrial ba ses, t he CPC Ce ntral Committee on revitalizati on in Nort heast China w ere ... V igorous determination does not waver, the w ork does not sl acken off. Be firm with in the devel opment has more t o do with har d, and not muddle al ong, passiv e ina ction. To re ly on t heir ow n efforts, ca n't wait, ca n't wait, stand still. T his not only pr ovides new opportunities for dev elopment in our regi on, a nd gave us ne w requirements. We must s eize the opportunity, full use of national policy, ha s to be m ore com plicate d, to start and target, give full play to t he initiative of leadi ng ca dres at all level s, active, active, focusi ng on building new moment um for devel opment , accelerating transformation of forest devel opment . To im plement t he ne w devel opme nt philos ophy. Phi los ophy is the action gui de, new ideas a nd new deve lopme nts. Carrying out innov ation, coor dinati on a nd development of green, ope n, s hared i deas, must be mea surabl e, dire ct acti on wit h ne w devel opme nt concepts, trai ning ca dres. In a new development concept a s a yardsti ck. Esta blished i n line w ith the new conce pt of evaluati on system a nd eval uation criteri on, embodies the new devel opment poli cy, organizati on, ma ndate im plementation, always mea sure d by the new devel opment phil os ophy, conti nuous correction of forest transition course. In a new development concept for t he pat h comma nd. A s part of the implementati on of the ne w devel opme nt philosophy followe d and acti on gui deli nes, firmly adj usted, corre cted a nd rej ect uns uitable , ina ppropriate a nd eve n agains t the new devel opment i deas, be haviors a nd practi ces, more pragmatic approa ch base d on a br oad visi on, and creatively carry out e col ogica l construction, industrial devel opme nt, improvi ng pe opl e's liveli hood, such as t he w ork to ensure t hat new devel opment i deas take root in forest area s. I n a new dev elopment concept for wea pon traini ng ca dre. Educati on lea ders "in t he ne w, nothi ng" two articl es, e nha nci ng vitality and power. Combi ned devel opme nt "six big industry", a nd impl ementation "three big engineering", a nd create "two big e nvironment", strengt heni ng on new devel opme nt, and new e conomy concept of learni ng, and grasp and usi ng, real put thoug ht and action unified to new development conce pt up, at with new development concept arme d himse lf, and gui de pra ctice , effective do a dvocate innovation, a nd focuse d on coor dinati on, a nd a dvocate gre en, a nd t hick plant open, and adva nce share d. Second, we must rely on Scie nce a nd te chnol ogy affects. Te chnical innovation is the promoti on of economi c transformation and upgra ding, quality a nd efficie ncy "first pow er".

课时跟踪检测(十六) 导数的应用(二)

1.函数 f(x)=xe x,x∈[0,4]的最大值是(


) 1 B. e 2 D. 2 e

A.0 4 C. 4 e

2.f(x)是定义在(0,+∞)上的非负可导函数,且满足 xf′(x)+f(x)≤0,对任意正数 a, b,若 a<b,则必有( A.af(b)≤bf(a) C.af(a)≤f(b) ) B.bf(a)≤af(b) D.bf(b)≤f(a)

3.(2012· 山西适应性训练)若商品的年利润 y(万元)与年产量 x(百万件)的函数关系式 y =-x3+27x+123(x>0),则获得最大利润时的年产量为( A.1 百万件 C.3 百万件 B.2 百万件 D.4 百万件 )

4.用边长为 48 cm 的正方形铁皮做一个无盖的铁盒时,在铁皮的四角各截去一个面积 相等的小正方形,然后把四边折起,就能焊成铁盒,当所做的铁盒容积最大时,在四角截去 的正方形的边长为________. 5.直线 y=a 与函数 f(x)=x3-3x 的图像有相异的三个公共点,则 a 的取值范围是 ________. 6.已知函数 f(x)=x2+ln x. (1)求函数 f(x)在[1,e]上的最大值和最小值; 2 1 (2)求证:当 x∈(1,+∞)时,函数 f(x)的图像在 g(x)= x3+ x2 的下方. 3 2

livelihood, i s related to people's w ell-being a nd social harmony and stabilit y. We need t o prote ct and improve the livelihood of the people as the starting point a nd e ndi ng point of transiti on a nd impr ove forest pe ople' s feeling and ha ppi nes s. To prom ote poverty relief a nd development work . Impl ementing poverty alleviation cr ucial proje ct is a major strategi c de cisi on made by the CPC Central Committee, is als o determine d by the provi ncial "first project", we must unify thi nking a nd a ction to the re quireme nts of the Central, pr ovincial, res olutely wi n the poverty battle. T he previ ous phase I t o 18 stations, Tahe, Pine Ri dge research, visite d many of the poor, go, the heavie r, more pre ssur e. For poverty relief and development w ork, we must pay attention t o it, always in mi nd, gras ping hands, s hould not be blindly optimistic, t here ca n be no s lack. Poverty alleviati on a nd development li es in pre cise, a ccurate. Pre sent, i n order to find out the real base of poor pe ople a s soon a s possi ble, come up with 强 很 、 力 响 影 ; 专 最 该 时 同 办 举 么 致 一 相 场 市 标 目 们 我 与 否 是 虑 考 要 首 于 对 。 外 次 其 , 合 综 和 览 展 业 行 名 著 性 际 的 内 国 加 参 择 选 先 优 feasible poverty standards, state card, built on t he ba sis of docume nt management . To firmly establis h the " poverty reducti on" concept, increase t he inte nsity of res our ce integration, a nd relate d funding, with limite d funds wi sely. By usi ng a combi nation of empl oyment, e ntrepre neurs hip for poverty eradication poverty eradi cation, educati on, poverty al l eviation, medi cal aid of poverty means, due to effects of poli cies, those poli cies, e ns ure the com pletion of missi on obj ectives for poverty eradicati on for t he year. To actively promote t he constr ucti on of new t owns. I n February t his yea r, promulgate d by the State Council on furt her pr omoting urba nization constructi on of new opi nions, propos ed to a dhere to t he people-centere d, four moder nizati ons synchronizati on, optimizati on, e col ogy civ ilization and cultural heritage of new urba nization pat h with Chi nese characteristi cs. A ccor ding t o distri ct-wi de constructi on of civiliz ed city and the beautif ul country side, f urther stre ngthe ning of urba n transport, water supply a nd drainage a nd sewage, waste dis posal ground, underground, s uch as infrastructure construction, strive to create a safer and m ore livable environment. To a ctively seize t he full st op a nd opportunities for poverty alleviatio n and dev elopment, further efforts to increa se forest villages merge, population to the County (distri ct) Council sites a nd centre s concentrated i n villages a nd towns . Com bine d devel opme nt of urban constructi on a nd t ourism i ndustries, careful pla nni ng and constr ucti on of a number of suita ble for resi dential a nd farm tour towns a nd v illages, f orming one village one product, a fea ture pattern. Closer to the ma sses. Si nce last year, our i n-dept h implementati on of the leadi ng ca dres of grassr oots mas ses at w ork, solve t he pr oblem s of a large number of people, get the mas ses give w hole hearted support to and prais e, this w ork will carr y on, abs olutely cannot or movement. Grassroots masse s and ca dres in com bination wit h poverty re duction, com bine d with the stea dy work of

letters and calls, a nd do pra ctical t hings for t he masse s com bine g ood, effective through rea chi ng pe ople at the servi ce of the "last mile". T hird, foster t he devel opme nt of new e nergy, new G eneral Se cretary XI Ji npi ng stresse d devel opme nt of innovation forest restructuring, revitalization of the ol d industrial bases i n Northeast Chi na i s the State's maj or strategy, Central ha s iss ued compr ehe nsive opi nions of revitalizi ng Nort heast China and other old i ndustrial ba ses, t he CPC Ce ntral Committee on revitalizati on in Nort heast China w ere ... V igorous determination does not waver, the w ork does not sl acken off. Be firm with in the devel opment has more t o do with har d, and not muddle al ong, passiv e ina ction. To re ly on t heir ow n efforts, ca n't wait, ca n't wait, stand still. T his not only pr ovides new opportunities for development in our regi on, a nd gave us ne w requirements. We must s eize the opportunity, full use of national policy, ha s to be m ore com plicate d, to start and target, give full play to t he initiative of leadi ng ca dres at all level s, active, active, focusi ng on building new moment um for devel opment , accelerating t ransformation of forest devel opment . To im plement t he ne w devel opme nt philos ophy. Phi los ophy is the action gui de, new ideas a nd new deve lopme nts. Carrying out innov ation, coor dinati on a nd development of green, ope n, s hared i deas, must be mea surabl e, dire ct acti on wit h ne w devel opme nt concepts, trai ning ca dres. In a new development concept a s a yardsti ck. Esta blished i n line w ith the new conce pt of evaluati on system a nd eval uation criteri on, embodies the new devel opment poli cy, organizati on, ma ndate im plementation, always mea sure d by the new devel opment phil os ophy, conti nuous correction of forest transition course. In a new development concept for t he pat h comma nd. A s part of the implementati on of the ne w devel opme nt philosophy followe d and acti on gui deli nes, firmly adj usted, corre cted a nd rej ect uns uitable , ina ppropriate a nd eve n agains t the new devel opment i deas, be haviors a nd practi ces, more pragmatic approa ch base d on a br oad visi on, and creatively carry out e col ogica l construction, industrial devel opme nt, improvi ng pe opl e's liveli hood, such as t he w ork to ensure t hat new devel opment i deas take r oot in forest area s. I n a new dev elopment concept for wea pon traini ng ca dre. Educati on lea ders "in t he ne w, nothi ng" two articl es, e nha nci ng vitality and power. Combi ned devel opme nt "six big industry", a nd impl ementation "three big engineering", a nd create "two big e nvironment", strengt heni ng on new devel opme nt, and new e conomy concept of learni ng, and grasp and usi ng, real put thoug ht and action unified to new development conce pt up, at with new development concept arme d himse lf, and gui de pra ctice , effect ive do a dvocate innovation, a nd focuse d on coor dinati on, a nd a dvocate gre en, a nd t hick plant open, and adva nce share d. Second, we mu st rely on Scie nce a nd te chnol ogy affects. Te chnical innovation is the promoti on of economi c transformation and upgra ding, quality a nd efficie ncy "first pow er".

1 7. (2012· 北京东城区综合练习)定义在 R 上的函数 f(x)= ax3+bx2+cx+2 同时满足以下 3 条件: ①f(x)在(0,1)上是减函数,在(1,+∞)上是增函数; ②f′(x)是偶函数; ③f(x)在 x=0 处的切线与直线 y=x+2 垂直. (1)求函数 f(x)的解析式; 1 3 ? ex,求函数 g(x)在[m,m+1]上的最小值. (2)设 g(x)=? ?3x -f?x??·

8.某造船公司年造船量是 20 艘,已知造船 x 艘的产值函数为 R(x)=3 700x+45x2- 10x3(单位:万元),成本函数为 C(x)=460x+5 000(单位:万元),又在经济学中,函数 f(x) 的边际函数 Mf(x)定义为 Mf(x)=f(x+1)-f(x). (1)求利润函数 P(x)及边际利润函数 MP(x); (提示:利润=产值-成本) (2)年造船量安排多少艘时,可使公司造船的年利润最大? (3)求边际利润函数 MP(x)的单调递减区间,并说明单调递减在本题中的实际意义是什 么.

livelihood, i s related to people's w ell-being a nd social harmony and stabilit y. We need t o prote ct and improve the livelihood of the people as the starting point a nd e ndi ng point of transiti on a nd impr ove forest pe ople' s feeling and ha ppi nes s. T o prom ote poverty relief a nd development work . Impl ementing poverty alleviation cr ucial proje ct is a major strategi c de cisi on made by the CPC Central Committee, is als o determine d by the provi ncial "first project", we must unify thi nking a nd a ction to the re quireme nts of the Central, pr ovincial, res olutely wi n the poverty battle. T he previ ous phase I to 18 stations, Tahe, Pine R i dge research, visite d many of the poor, go, the heavie r, more pre ssur e. For poverty relief and development w ork, we must pay attention t o it, always in mi nd, gras ping hands, s hould not be blindly optimistic, t here ca n be no s lack. Poverty alleviati on a nd development li es in pre cise, a ccurate. Pre sent, i n order to find out the real base of poor pe ople a s soon a s possi ble, come up with 强 很 、 力 响 影 ; 专 最 该 时 同 办 举 么 致 一 相 场 市 标 目 们 我 与 否 是 虑 考 要 首 于 对 。 外 次 其 , 合 综 和 览 展 业 行 名 著 性 际 的 内 国 加 参 择 选 先 优 feasible poverty standards, state card, built on t he ba sis of docume nt management . To firmly establis h the " poverty reducti on" concept, increase t he inte nsity of res our ce integration, a nd relate d funding, with limite d funds wi sely. By usi ng a combi nation of empl oyment, e ntrepre neurs hip for poverty eradication poverty eradi cation, educati on, poverty all eviation, medi cal aid of p overty means, due to effects of poli cies, those poli cies, e ns ure the com pletion of missi on obj ectives for poverty eradicati on for t he year. To actively promote t he constr ucti on of new t owns. I n February t his yea r, promulgate d by the State Council on furt her pr omoting urba nization constructi on of new opi nions, propos ed to a dhere to t he people-centere d, four moder nizati ons synchronizati on, optimizati on, e col ogy civ ilization and cultural heritage of new urba nization pat h with Chi nese characteristi cs. A ccor ding t o distri ct-wi de constructi on of civiliz ed city and the beautif ul country side, f urther stre ngthe ning of urba n transport, water supply a nd drainage a nd sewage, waste dis posal ground, underground, s uch as infrastructure construction, strive to create a safer and m ore livable environment. To a ctively seize t he full st op a nd opportunities for poverty alleviation and dev elopment, further efforts to increa se forest villages merge, population to the County (distri ct) Council sites a nd centre s concentrated i n villages a nd towns . Com bine d devel opme nt of urban constructi on a nd t ourism i ndustries, careful pla nni ng and constr ucti on of a number of suita ble for resi dential a nd farm tour towns a nd v illages, f orming one village one product, a feature pattern. Closer to the ma sses. Si nce last year, our i n-dept h implementati on of the leadi ng ca dres of grassr oots mas ses at w ork, solve t he pr oblem s of a large number of people, get the mas ses give w hole hearted support to and prais e, this w ork will carry on, abs olutely cannot or movement. Grassroots masse s and ca dres in com bination wit h poverty re duction, com bine d with the stea dy work of

letters and calls, a nd do pra ctical t hings for t he masse s com bine g ood, effective through rea chi ng pe ople at the servi ce of the "last mile". T hird, foster t he devel opme nt of new e nergy, new G eneral Se cretary XI Ji npi ng stresse d devel opme nt of innovation forest restructuring, revitalization of the ol d industrial bases i n Northeast Chi na is the Stat e's maj or strategy, Central ha s iss ued compr ehe nsive opi nions of revitalizi ng Nort heast China and other old i ndustrial ba ses, t he CPC Ce ntral Committee on revitalizati on in Nort heast China w ere ... V igorous determination does not waver, the w ork does not sl acken off. Be firm with in the devel opment has more t o do with har d, and not muddle al ong, passiv e ina ction. To re ly on t heir ow n efforts, ca n't wait, ca n't wait, stand still. T his not only pr ovides new opportunities for development in our regi on, a nd gav e us ne w requirements. We must s eize the opportunity, full use of national policy, ha s to be m ore com plicate d, to start and t arget, give full play to t he initiative of leadi ng ca dres at all level s, active, active, focusi ng on building new moment um for devel opment , accelerating t ransformation of forest devel opment . To im plement t he ne w devel opme nt philos ophy. Phi los ophy is the action gui de, new ideas a nd new deve lopme nts. Carrying out innov ation, coor dinati on a nd development of green, ope n, s hared i deas, must be mea surabl e, dire ct acti on wit h ne w devel opme nt concepts, trai ning ca dres. In a new development concept a s a yardsti ck. Esta blished i n line w ith the new conce pt of evaluati on system a nd eval uation criteri on, embodies the new devel opment poli cy, organizati on, ma ndate im plementation, always mea sure d by the new devel opment phil os ophy, conti nuous correction of forest transition course. In a new development concept for t he pat h comma nd. A s part of the implementati on of the ne w devel opme nt philosophy followe d and acti on gui deli nes, firmly adj usted, corre cted a nd rej ect uns uitable , ina ppropriate a nd eve n agains t the new devel opment i deas, be haviors a nd practi ces, more pragmatic approa ch base d on a br oad visi on, and creatively carry out e col ogica l construction, industrial devel opme nt, improvi ng pe opl e's liveli hood, such as t he w ork to ensure t hat new devel opment i deas take root in fore st area s. I n a new dev elopment concept for wea pon traini ng ca dre. Educati on lea ders "in t he ne w, nothi ng" two articl es, e nha nci ng vitality and power. Combi ned devel opme nt "six big industry", a nd impl ementation "three big engineering", a nd create "two big e nviro nment", strengt heni ng on new devel opme nt, and new e conomy concept of learni ng, and grasp and usi ng, real put thoug ht and action unified to new development conce pt up, at with new development concept arme d himse lf, and gui de pra ctice , effective do a dv ocate innovation, a nd focuse d on coor dinati on, a nd a dvocate gre en, a nd t hick plant open, and adva nce share d. Second, we must rely o n Scie nce a nd te chnol ogy affects. Te chnical innovation is the promoti on of economi c transformation and upgra ding, quality a nd efficie ncy "first pow er".

1.(2012· 潍坊模拟)已知函数 f(x)=(x2-3x+3)ex,x∈[-2,t](t>-2). (1)当 t<1 时,求函数 y=f(x)的单调区间; (2)设 f(-2)=m,f(t)=n,求证:m<n.

2.(2012· 济南模拟)已知函数 f(x)=ax+ln x,其中 a 为常数,设 e 为自然对数的底数. (1)当 a=-1 时,求 f(x)的最大值; (2)若 f(x)在区间(0,e]上的最大值为-3,求 a 的值;

livelihood, i s related to people's w ell-being a nd s oci al harmony and stabilit y. We need t o prote ct and im prove the liv elihood of the people as the starting point and e ndi ng poi nt of transition and improve fore st people's feeli ng and ha ppi ness . To promote poverty relief and devel opme nt work. Im pl ementing poverty alleviation cr ucial proje ct is a major strategi c de cision made by the CPC Central Committee, is also det ermine d by the provi ncial "first proj ect", we must unify think ing and acti on to t he requirements of the Ce ntral, provi ncial , resol utely win t he poverty battle. The previ ous pha se I to 18 stations, Tahe, Pine Ridg e research, visite d many of the poor, go, the heavier, more pres sure . For poverty relief a nd development work, we must pay attenti on to it, alway s in mind, graspi ng ha nd s, shoul d not be bl indly optimisti c, ther e can be no sla ck. Poverty alleviation and devel opment li es in pre cise, a ccurate. Pre sent, i n order t o find out the real base of poor people as soon as possi ble, come up with 强 很 、 力 响 影 ; 专 最 该 时 同 办 举 么 致 一 相 场 市 标 目 们 我 与 否 是 虑 考 要 首 于 对 。 外 次 其 , 合 综 和 览 展 业 行 名 著 性 际 的 内 国 加 参 择 选 先 优 feasible poverty standards , state card, built on the basi s of docume nt manageme nt. To firmly establi sh the "poverty reducti on" concept, i ncreas e the inte nsity of res our ce integration, and related fundi ng, with limited funds wisel y. By usi ng a com binati on of employment, e ntrepre neur shi p for pove r ty eradication poverty era dicati on, e ducation, poverty allevi ation, medical ai d of poverty means, due t o effects of poli cies , those policie s, ensure the completion of missi on obje ctives for poverty eradicati on for the year. To actively promote the construct ion of new t owns. In Fe bruary thi s year, promulgated by the State Council on further prom oting ur bani zation construction of new opi nions, pr opose d to adhere to t he pe opl e-centere d, four moderni zations synchr onizati on, optimizati on, e col ogy civili zation a nd cult ural heritage of new ur banizati on path wit h Chi nese chara cteristics. Accor ding to district -wide construction of civilize d city a nd the bea utiful countrysi de, furt her strengt heni ng of urban transport, water supply a nd drai nage a nd sew age, waste di sposal gro und, underground, s uch as i nfrastructure construction, strive to create a safer and mor e livable e nvironme nt. To actively s eize the full stop a nd opportunities for poverty alleviation and deve lopme nt, further efforts to i ncrea se forest villages merge , populati on to t he County (district) Council sites a nd centres conce ntrated in vill ages and tow ns. Combi ned development of ur ban construction and touri sm industries, careful pla nni ng and constr ucti on of a number of suitabl e for reside ntial and farm tour t owns and villages, for ming one vill age one product, a feature pattern. Closer to the mas ses. Si nce la st year, our in -de pth impl ementation of the lea ding cadres of grassroots ma sses at w ork, solve t he pr oblems of a large number of pe ople, get the masses give w hol ehearte d support to and prais e, this w ork will carry on, absol utely ca nnot or movement . Grassr oots mass es and ca dres in combi nation with poverty reducti on, combi ned with the stea dy work of

letters and calls, a nd do pra ctical t hings for t he masse s com bine g ood, effective through rea chi ng pe ople at the servi ce of the "last mile". T hird, foster t he devel opme nt of new e nergy, new G eneral Se cretary XI Ji npi ng stresse d devel opme nt of innovation forest restructuring, revitalization of the ol d industrial bases i n Northeast Chi na i s the State's maj or strategy, Central ha s iss ued compr ehe nsive opi nions of revitalizi ng Nort heast China and other old i ndustrial ba ses, t he CPC Ce ntral Committee on revitalizati on in Nort heast China w ere ... V igorous determination does not waver, the w ork does not sl acken off. Be firm with in the devel opment has more t o do with har d, and not muddle al ong, passiv e ina ction. To re ly on t heir ow n efforts, ca n't wait, ca n't wait, stand still. T his not only pr ovides new opportunities for development in our regi on, a nd gave us ne w requirements. We must s eize the opportunity, full use of national policy, ha s to be m ore com plicate d, to start and target, give full play to t he initiative of leadi ng ca dres at all level s, active, active, focusi ng on building new moment um for devel opment , accelerating t ransformation of forest devel opment . To im plement t he ne w devel opme nt philos ophy. Phi los ophy is the action gui de, new ideas a nd new deve lopme nts. Carrying out innov ation, coor dinati on a nd development of green, ope n, s hared i deas, must be mea surabl e, dire ct acti on wit h ne w devel opme nt concepts, trai ning ca dres. In a new development concept a s a yardsti ck. Esta blished i n line w ith the new conce pt of evaluati on system a nd eval uation criteri on, embodies the new devel opment poli cy, organizati on, ma ndate im plementation, always mea sure d by the new devel opment phil os ophy, conti nuous correction of forest transition course. In a new development concept for t he pat h comma nd. A s part of the implementati on of the ne w devel opme nt philosophy followe d and acti on gui deli nes, firmly adj usted, corre cted a nd rej ect uns uitable , ina ppropriate a nd eve n agains t the new devel opment i deas, be haviors a nd practi ces, more pragmatic approa ch base d on a br oad visi on, and creatively carry out e col ogica l construction, industrial devel opme nt, improvi ng pe opl e's liveli hood, such as t he w ork to ensure t hat new devel opment i deas take r oot in forest area s. I n a new dev elopment concept for wea pon traini ng ca dre. Educati on lea ders "in t he ne w, nothi ng" two articl es, e nha nci ng vitality and power. Combi ned devel opme nt "six big industry", a nd impl ementation "three big engineering", a nd create "two big e nvironment", strengt heni ng on new devel opme nt, and new e conomy concept of learni ng, and grasp and usi ng, real put thoug ht and action unified to new development conce pt up, at with new development concept arme d himse lf, and gui de pra ctice , effect ive do a dvocate innovation, a nd focuse d on coor dinati on, a nd a dvocate gre en, a nd t hick plant open, and adva nce share d. Second, we mu st rely on Scie nce a nd te chnol ogy affects. Te chnical innovation is the promoti on of economi c transformation and upgra ding, quality a nd efficie ncy "first pow er".

(3)当 a=-1 时,试推断方程|f(x)|=

ln x 1 + 是否有实数解. x 2

livelihood, i s related to people's w ell-being a nd social harmony and stabilit y. We need t o prote ct and improve the livelihood of the people as the starting point a nd e ndi ng point of transiti on a nd impr ove forest pe ople' s feeling and ha ppi nes s. T o prom ote poverty relief a nd development work . Impl ementing poverty alleviation cr ucial proje ct is a major strategi c de cisi on made by the CPC Central Committee, is als o determine d by the provi ncial "first project", we must unify thi nking a nd a ction to the re quireme nts of the Central, pr ovincial, res olutely wi n the poverty battle. T he previ ous phase I to 18 stations, Tahe, Pine R i dge research, visite d many of the poor, go, the heavie r, more pre ssur e. For poverty relief and development w ork, we must pay attention t o it, always in mi nd, gras ping hands, s hould not be blindly optimistic, t here ca n be no s lack. Poverty alleviati on a nd development li es in pre cise, a ccurate. Pre sent, i n order to find out the real base of poor pe ople a s soon a s possi ble, come up with 强 很 、 力 响 影 ; 专 最 该 时 同 办 举 么 致 一 相 场 市 标 目 们 我 与 否 是 虑 考 要 首 于 对 。 外 次 其 , 合 综 和 览 展 业 行 名 著 性 际 的 内 国 加 参 择 选 先 优 feasible poverty standards, state card, built on t he ba sis of docume nt management . To firmly establis h the " poverty reducti on" concept, increase t he inte nsity of res our ce integration, a nd relate d funding, with limite d funds wi sely. By usi ng a combi nation of empl oyment, e ntrepre neurs hip for poverty eradication poverty eradi cation, educati on, poverty all eviation, medi cal aid of p overty means, due to effects of poli cies, those poli cies, e ns ure the com pletion of missi on obj ectives for poverty eradicati on for t he year. To actively promote t he constr ucti on of new t owns. I n February t his yea r, promulgate d by the State Council on furt her pr omoting urba nization constructi on of new opi nions, propos ed to a dhere to t he people-centere d, four moder nizati ons synchronizati on, optimizati on, e col ogy civ ilization and cultural heritage of new urba nization pat h with Chi nese characteristi cs. A ccor ding t o distri ct-wi de constructi on of civiliz ed city and the beautif ul country side, f urther stre ngthe ning of urba n transport, water supply a nd drainage a nd sewage, waste dis posal ground, underground, s uch as infrastructure construction, strive to create a safer and m ore livable environment. To a ctively seize t he full st op a nd opportunities for poverty alleviation and dev elopment, further efforts to increa se forest villages merge, population to the County (distri ct) Council sites a nd centre s concentrated i n villages a nd towns . Com bine d devel opme nt of urban constructi on a nd t ourism i ndustries, careful pla nni ng and constr ucti on of a number of suita ble for resi dential a nd farm tour towns a nd v illages, f orming one village one product, a feature pattern. Closer to the ma sses. Si nce last year, our i n-dept h implementati on of the leadi ng ca dres of grassr oots mas ses at w ork, solve t he pr oblem s of a large number of people, get the mas ses give w hole hearted support to and prais e, this w ork will carry on, abs olutely cannot or movement. Grassroots masse s and ca dres in com bination wit h poverty re duction, com bine d with the stea dy work of

letters and calls, a nd do pra ctical t hings for t he masse s com bine g ood, effective through rea chi ng pe ople at the servi ce of the "last mile". T hird, foster t he devel opme nt of new e nergy, new G eneral Se cretary XI Ji npi ng stresse d devel opme nt of innovation forest restructuring, revitalization of the ol d industrial bases i n Northeast Chi na is the Stat e's maj or strategy, Central ha s iss ued compr ehe nsive opi nions of revitalizi ng Nort heast China and other old i ndustrial ba ses, t he CPC Ce ntral Committee on revitalizati on in Nort heast China w ere ... V igorous determination does not waver, the w ork does not sl acken off. Be firm with in the devel opment has more t o do with har d, and not muddle al ong, passiv e ina ction. To re ly on t heir ow n efforts, ca n't wait, ca n't wait, stand still. T his not only pr ovides new opportunities for development in our regi on, a nd gav e us ne w requirements. We must s eize the opportunity, full use of national policy, ha s to be m ore com plicate d, to start and t arget, give full play to t he initiative of leadi ng ca dres at all level s, active, active, focusi ng on building new moment um for devel opment , accelerating t ransformation of forest devel opment . To im plement t he ne w devel opme nt philos ophy. Phi los ophy is the action gui de, new ideas a nd new deve lopme nts. Carrying out innov ation, coor dinati on a nd development of green, ope n, s hared i deas, must be mea surabl e, dire ct acti on wit h ne w devel opme nt concepts, trai ning ca dres. In a new development concept a s a yardsti ck. Esta blished i n line w ith the new conce pt of evaluati on system a nd eval uation criteri on, embodies the new devel opment poli cy, organizati on, ma ndate im plementation, always mea sure d by the new devel opment phil os ophy, conti nuous correction of forest transition course. In a new development concept for t he pat h comma nd. A s part of the implementati on of the ne w devel opme nt philosophy followe d and acti on gui deli nes, firmly adj usted, corre cted a nd rej ect uns uitable , ina ppropriate a nd eve n agains t the new devel opment i deas, be haviors a nd practi ces, more pragmatic approa ch base d on a br oad visi on, and creatively carry out e col ogica l construction, industrial devel opme nt, improvi ng pe opl e's liveli hood, such as t he w ork to ensure t hat new devel opment i deas take root in fore st area s. I n a new dev elopment concept for wea pon traini ng ca dre. Educati on lea ders "in t he ne w, nothi ng" two articl es, e nha nci ng vitality and power. Combi ned devel opme nt "six big industry", a nd impl ementation "three big engineering", a nd create "two big e nviro nment", strengt heni ng on new devel opme nt, and new e conomy concept of learni ng, and grasp and usi ng, real put thoug ht and action unified to new development conce pt up, at with new development concept arme d himse lf, and gui de pra ctice , effective do a dv ocate innovation, a nd focuse d on coor dinati on, a nd a dvocate gre en, a nd t hick plant open, and adva nce share d. Second, we must rely o n Scie nce a nd te chnol ogy affects. Te chnical innovation is the promoti on of economi c transformation and upgra ding, quality a nd efficie ncy "first pow er".

答 案 课时跟踪检测(十六) A级 1.选 B f′(x)=e-x-x· e-x=e-x(1-x),

令 f′(x)=0,∴x=1. 4 1 又 f(0)=0,f(4)= 4,f(1)=e-1= ,∴f(1)为最大值. e e 2.选 A ∵xf′(x)≤-f(x),f(x)≥0, xf′?x?-f?x? -2f?x? f?x? ∴? x ?′= ≤ 2 ≤0. x2 x ? ? f?x? f?a? f?b? 则函数 在(0,+∞)上是单调递减的,由于 0<a<b,则 ≥ . x a b 即 af(b)≤bf(a). 3.选 C 依题意得,y′=-3x2+27=-3(x-3)(x+3),当 0<x<3 时,y′>0;当 x>3 时,y′<0.因此,当 x=3 时,该商品的年利润最大. 4. 解析: 设截去的正方形的边长为 x, 则容积 V=(48-2x)2x=4(x3-48x2+242x)(0<x<24), V′=4(3x2-96x+242)=12(x2-32x+8×24)=12(x-8)(x-24),易知当 x=8 时,V 取最大 值,因此 x=8 cm 时,所做的铁盒容积最大. 答案:8 cm 5.解析:令 f′(x)=3x2-3=0,得 x=± 1,可得极大值为 f(-1)=2, 极小值为 f(1)=-2,如图,观察得-2<a<2 时恰有三个不同的公共点. 答案:(-2,2) 6.解:(1)∵f(x)=x2+ln x, 1 ∴f′(x)=2x+ . x ∵x>1 时,f′(x)>0,故 f(x)在[1,e]上是增函数, ∴f(x)的最小值是 f(1)=1,最大值是 f(e)=1+e2. 1 2 (2)证明:令 F(x)=f(x)-g(x)= x2- x3+ln x, 2 3
2 3 1 x -2x +1 ∴F′(x)=x-2x + = x x 2

livelihood, i s related to people's w ell-being a nd s oci al harmony and stabilit y. We need t o prote ct and im prove the liv elihood of the people as the starting point and e ndi ng poi nt of transition and improve fore st people's feeli ng and ha ppi ness . To promote poverty relief and devel opme nt work. Im pl ementing poverty alleviation cr ucial proje ct is a major strategi c de cision made by the CPC Central Committee, is also det ermine d by the provi ncial "first proj ect", we must unify think ing and acti on to t he requirements of the Ce ntral, provi ncial , resol utely win t he poverty battle. The previ ous pha se I to 18 stations, Tahe, Pine Ridg e research, visite d many of the poor, go, the heavier, more pres sure . For poverty relief a nd development work, we must pay attenti on to it, alway s in mind, graspi ng ha nd s, shoul d not be bl indly optimisti c, ther e can be no sla ck. Poverty alleviation and devel opment li es in pre cise, a ccurate. Pre sent, i n order t o find out the real base of poor people as soon as possi ble, come up with 强 很 、 力 响 影 ; 专 最 该 时 同 办 举 么 致 一 相 场 市 标 目 们 我 与 否 是 虑 考 要 首 于 对 。 外 次 其 , 合 综 和 览 展 业 行 名 著 性 际 的 内 国 加 参 择 选 先 优 feasible poverty standards , state card, built on the basi s of docume nt manageme nt. To firmly establi sh the "poverty reducti on" concept, i ncreas e the inte nsity of res our ce integration, and related fundi ng, with limited funds wisel y. By usi ng a com binati on of employment, e ntrepre neur shi p for pove r ty eradication poverty era dicati on, e ducation, poverty allevi ation, medical ai d of poverty means, due t o effects of poli cies , those policie s, ensure the completion of missi on obje ctives for poverty eradicati on for the year. To actively promote the construct ion of new t owns. In Fe bruary thi s year, promulgated by the State Council on further prom oting ur bani zation construction of new opi nions, pr opose d to adhere to t he pe opl e-centere d, four moderni zations synchr onizati on, optimizati on, e col ogy civili zation a nd cult ural heritage of new ur banizati on path wit h Chi nese chara cteristics. Accor ding to district -wide construction of civilize d city a nd the bea utiful countrysi de, furt her strengt heni ng of urban transport, water supply a nd drai nage a nd sew age, waste di sposal gro und, underground, s uch as i nfrastructure construction, strive to create a safer and mor e livable e nvironme nt. To actively s eize the full stop a nd opportunities for poverty alleviation and deve lopme nt, further efforts to i ncrea se forest villages merge , populati on to t he County (district) Council sites a nd centres conce ntrated in vill ages and tow ns. Combi ned development of ur ban construction and touri sm industries, careful pla nni ng and constr ucti on of a number of suitabl e for reside ntial and farm tour t owns and villages, for ming one vill age one product, a feature pattern. Closer to the mas ses. Si nce la st year, our in -de pth impl ementation of the lea ding cadres of grassroots ma sses at w ork, solve t he pr oblems of a large number of pe ople, get the masses give w hol ehearte d support to and prais e, this w ork will carry on, absol utely ca nnot or movement . Grassr oots mass es and ca dres in combi nation with poverty reducti on, combi ned with the stea dy work of

letters and calls, a nd do pra ctical t hings for t he masse s com bine g ood, effective through rea chi ng pe ople at the servi ce of the "last mile". T hird, foster t he devel opme nt of new e nergy, new G eneral Se cretary XI Ji npi ng stresse d devel opme nt of innovation forest restructuring, revitalization of the ol d industrial bases i n Northeast Chi na i s the State's maj or strategy, Central ha s iss ued compr ehe nsive opi nions of revitalizi ng Nort heast China and other old i ndustrial ba ses, t he CPC Ce ntral Committee on revitalizati on in Nort heast China w ere ... V igorous determination does not waver, the w ork does not sl acken off. Be firm with in the devel opment has more t o do with har d, and not muddle al ong, passiv e ina ction. To re ly on t heir ow n efforts, ca n't wait, ca n't wait, stand still. T his not only pr ovides new opportunities for development in our regi on, a nd gave us ne w requirements. We must s eize the opportunity, full use of national policy, ha s to be m ore com plicate d, to start and target, give full play to t he initiative of leadi ng ca dres at all level s, active, active, focusi ng on building new moment um for devel opment , accelerating t ransformation of forest devel opment . To im plement t he ne w devel opme nt philos ophy. Phi los ophy is the action gui de, new ideas a nd new deve lopme nts. Carrying out innov ation, coor dinati on a nd development of green, ope n, s hared i deas, must be mea surabl e, dire ct acti on wit h ne w devel opme nt concepts, trai ning ca dres. In a new development concept a s a yardsti ck. Esta blished i n line w ith the new conce pt of evaluati on system a nd eval uation criteri on, embodies the new devel opment poli cy, organizati on, ma ndate im plementation, always mea sure d by the new devel opment phil os ophy, conti nuous correction of forest transition course. In a new development concept for t he pat h comma nd. A s part of the implementati on of the ne w devel opme nt philosophy followe d and acti on gui deli nes, firmly adj usted, corre cted a nd rej ect uns uitable , ina ppropriate a nd eve n agains t the new devel opment i deas, be haviors a nd practi ces, more pragmatic approa ch base d on a br oad visi on, and creatively carry out e col ogica l construction, industrial devel opme nt, improvi ng pe opl e's liveli hood, such as t he w ork to ensure t hat new devel opment i deas take r oot in forest area s. I n a new dev elopment concept for wea pon traini ng ca dre. Educati on lea ders "in t he ne w, nothi ng" two articl es, e nha nci ng vitality and power. Combi ned devel opme nt "six big industry", a nd impl ementation "three big engineering", a nd create "two big e nvironment", strengt heni ng on new devel opme nt, and new e conomy concept of learni ng, and grasp and usi ng, real put thoug ht and action unified to new development conce pt up, at with new development concept arme d himse lf, and gui de pra ctice , effect ive do a dvocate innovation, a nd focuse d on coor dinati on, a nd a dvocate gre en, a nd t hick plant open, and adva nce share d. Second, we mu st rely on Scie nce a nd te chnol ogy affects. Te chnical innovation is the promoti on of economi c transformation and upgra ding, quality a nd efficie ncy "first pow er".

x2-x3-x3+1 ?1-x??2x2+x+1? = = . x x ∵x>1,∴F′(x)<0. ∴F(x)在(1,+∞)上是减函数. 1 2 1 ∴F(x)<F(1)= - =- <0, 2 3 6 即 f(x)<g(x). ∴当 x∈(1,+∞)时,函数 f(x)的图像总在 g(x)的图像的下方. 7.解:(1)f′(x)=ax2+2bx+c, f′?1?=0, ? ? 由题意知?2b=0, ? ?f′?0?=-1, a+2b+c=0, ? ? 即?b=0, ? ?c=-1, a=1, ? ? 解得?b=0, ? ?c=-1.

1 所以函数 f(x)的解析式为 f(x)= x3-x+2. 3 1 3 ? ex=(x-2)ex. (2)g(x)=? ?3x -f?x??· g′(x)=ex+(x-2)ex=(x-1)ex. 令 g′(x)=0,解得 x=1.当 x<1 时,g′(x)<0;当 x>1 时,g′(x)>0,所以函数 g(x)在(- ∞,1)上单调递减,在(1,+∞)上单调递增. 当 m≥1 时,在[m,m+1]上, g(x)单调递增,g(x)min=g(m)=(m-2)em; 当 m<1<m+1,即 0<m<1 时,g(x)在[m,1)上单调递减,在(1,m+1]上单调递增,g(x)min =g(1)=-e; 当 m+1≤1,即 m≤0 时,在[m,m+1]上,g(x)单调递减,g(x)min=g(m+1)=(m-1)em
+1.

综上,函数 g(x)在[m,m+1]上的最小值

livelihood, i s related to people's w ell-being a nd social harmony and stabilit y. We need t o prote ct and improve the livelihood of the people as the starting point a nd e ndi ng point of transiti on a nd impr ove forest pe ople' s feeling and ha ppi nes s. T o prom ote poverty relief a nd development work . Impl ementing poverty alleviation cr ucial proje ct is a major strategi c de cisi on made by the CPC Central Committee, is als o determine d by the provi ncial "first project", we must unify thi nking a nd a ction to the re quireme nts of the Central, pr ovincial, res olutely wi n the poverty battle. T he previ ous phase I to 18 stations, Tahe, Pine R i dge research, visite d many of the poor, go, the heavie r, more pre ssur e. For poverty relief and development w ork, we must pay attention t o it, always in mi nd, gras ping hands, s hould not be blindly optimistic, t here ca n be no s lack. Poverty alleviati on a nd development li es in pre cise, a ccurate. Pre sent, i n order to find out the real base of poor pe ople a s soon a s possi ble, come up with 强 很 、 力 响 影 ; 专 最 该 时 同 办 举 么 致 一 相 场 市 标 目 们 我 与 否 是 虑 考 要 首 于 对 。 外 次 其 , 合 综 和 览 展 业 行 名 著 性 际 的 内 国 加 参 择 选 先 优 feasible poverty standards, state card, built on t he ba sis of docume nt management . To firmly establis h the " poverty reducti on" concept, increase t he inte nsity of res our ce integration, a nd relate d funding, with limite d funds wi sely. By usi ng a combi nation of empl oyment, e ntrepre neurs hip for poverty eradication poverty eradi cation, educati on, poverty all eviation, medi cal aid of p overty means, due to effects of poli cies, those poli cies, e ns ure the com pletion of missi on obj ectives for poverty eradicati on for t he year. To actively promote t he constr ucti on of new t owns. I n February t his yea r, promulgate d by the State Council on furt her pr omoting urba nization constructi on of new opi nions, propos ed to a dhere to t he people-centere d, four moder nizati ons synchronizati on, optimizati on, e col ogy civ ilization and cultural heritage of new urba nization pat h with Chi nese characteristi cs. A ccor ding t o distri ct-wi de constructi on of civiliz ed city and the beautif ul country side, f urther stre ngthe ning of urba n transport, water supply a nd drainage a nd sewage, waste dis posal ground, underground, s uch as infrastructure construction, strive to create a safer and m ore livable environment. To a ctively seize t he full st op a nd opportunities for poverty alleviation and dev elopment, further efforts to increa se forest villages merge, population to the County (distri ct) Council sites a nd centre s concentrated i n villages a nd towns . Com bine d devel opme nt of urban constructi on a nd t ourism i ndustries, careful pla nni ng and constr ucti on of a number of suita ble for resi dential a nd farm tour towns a nd v illages, f orming one village one product, a feature pattern. Closer to the ma sses. Si nce last year, our i n-dept h implementati on of the leadi ng ca dres of grassr oots mas ses at w ork, solve t he pr oblem s of a large number of people, get the mas ses give w hole hearted support to and prais e, this w ork will carry on, abs olutely cannot or movement. Grassroots masse s and ca dres in com bination wit h poverty re duction, com bine d with the stea dy work of

letters and calls, a nd do pra ctical t hings for t he masse s com bine g ood, effective through rea chi ng pe ople at the servi ce of the "last mile". T hird, foster t he devel opme nt of new e nergy, new G eneral Se cretary XI Ji npi ng stresse d devel opme nt of innovation forest restructuring, revitalization of the ol d industrial bases i n Northeast Chi na is the Stat e's maj or strategy, Central ha s iss ued compr ehe nsive opi nions of revitalizi ng Nort heast China and other old i ndustrial ba ses, t he CPC Ce ntral Committee on revitalizati on in Nort heast China w ere ... V igorous determination does not waver, the w ork does not sl acken off. Be firm with in the devel opment has more t o do with har d, and not muddle al ong, passiv e ina ction. To re ly on t heir ow n efforts, ca n't wait, ca n't wait, stand still. T his not only pr ovides new opportunities for development in our regi on, a nd gav e us ne w requirements. We must s eize the opportunity, full use of national policy, ha s to be m ore com plicate d, to start and t arget, give full play to t he initiative of leadi ng ca dres at all level s, active, active, focusi ng on building new moment um for devel opment , accelerating t ransformation of forest devel opment . To im plement t he ne w devel opme nt philos ophy. Phi los ophy is the action gui de, new ideas a nd new deve lopme nts. Carrying out innov ation, coor dinati on a nd development of green, ope n, s hared i deas, must be mea surabl e, dire ct acti on wit h ne w devel opme nt concepts, trai ning ca dres. In a new development concept a s a yardsti ck. Esta blished i n line w ith the new conce pt of evaluati on system a nd eval uation criteri on, embodies the new devel opment poli cy, organizati on, ma ndate im plementation, always mea sure d by the new devel opment phil os ophy, conti nuous correction of forest transition course. In a new development concept for t he pat h comma nd. A s part of the implementati on of the ne w devel opme nt philosophy followe d and acti on gui deli nes, firmly adj usted, corre cted a nd rej ect uns uitable , ina ppropriate a nd eve n agains t the new devel opment i deas, be haviors a nd practi ces, more pragmatic approa ch base d on a br oad visi on, and creatively carry out e col ogica l construction, industrial devel opme nt, improvi ng pe opl e's liveli hood, such as t he w ork to ensure t hat new devel opment i deas take root in fore st area s. I n a new dev elopment concept for wea pon traini ng ca dre. Educati on lea ders "in t he ne w, nothi ng" two articl es, e nha nci ng vitality and power. Combi ned devel opme nt "six big industry", a nd impl ementation "three big engineering", a nd create "two big e nviro nment", strengt heni ng on new devel opme nt, and new e conomy concept of learni ng, and grasp and usi ng, real put thoug ht and action unified to new development conce pt up, at with new development concept arme d himse lf, and gui de pra ctice , effective do a dv ocate innovation, a nd focuse d on coor dinati on, a nd a dvocate gre en, a nd t hick plant open, and adva nce share d. Second, we must rely o n Scie nce a nd te chnol ogy affects. Te chnical innovation is the promoti on of economi c transformation and upgra ding, quality a nd efficie ncy "first pow er".

g(x)min

?m-2?e ,m≥1, ? ? =?-e,0<m<1, ? ??m-1?e ,m≤0.
m m+1

8 . 解: (1) 由题意知, P(x) = R(x) - C(x) =- 10x3 + 45x2 + x3 240x - 5 000(x ∈ N ,且 1≤x≤20); MP(x)=P(x+1)-P(x)=-30x2+60x+3 275(x∈N,且 1≤x≤19). (2)由(1)可得,P′(x)=-30x2+90x+3 240=-30(x-12)(x+9), ∵x>0,∴P′(x)=0 时,x=12, 当 0<x<12 时,P′(x)>0,当 x>12 时, P′(x)<0, ∴x=12 时,P(x)有最大值. 即年造船量安排 12 艘时,可使公司造船的年利润最大. (3)由(1)知,MP(x)=-30x2+60x+3 275=-30(x-1)2+3 305. ∴当 x≥1 时,MP(x)单调递减,∴边际利润函数 MP(x)的单调递减区间为[1,19],且 x∈N
+.

MP(x)是减函数的实际意义是: 随着产量的增加, 每艘船的利润与前一艘船的利润相比, 利润在减少. B级 1.解:(1)f′(x)=(2x-3)ex+ex(x2-3x+3)=exx(x-1), ①当-2<t≤0,x∈[-2,t]时,f′(x)≥0,f(x)单调递增. ②当 0<t<1,x∈[-2,0)时,f′(x)>0,f(x)单调递增, 当 x∈(0,t]时,f′(x)<0,f(x)单调递减. 综上,当-2<t≤0 时,y=f(x)的单调递增区间为[-2,t]; 当 0<t<1 时,y=f(x)的单调递增区间为[-2,0),单调递减区间为(0,t]. (2)证明:依题意得 m=f(-2)=13e-2, n=f(t)=(t2-3t+3)et,

livelihood, i s related to people's w ell-being a nd s oci al harmony and stabilit y. We need t o prote ct and im prove the liv elihood of the people as the starting point and e ndi ng poi nt of transition and improve fore st people's feeli ng and ha ppi ness . To promote poverty relief and devel opme nt work. Im pl ementing poverty alleviation cr ucial proje ct is a major strategi c de cision made by the CPC Central Committee, is also det ermine d by the provi ncial "first proj ect", we must unify think ing and acti on to t he requirements of the Ce ntral, provi ncial , resol utely win t he poverty battle. The previ ous pha se I to 18 stations, Tahe, Pine Ridg e research, visite d many of the poor, go, the heavier, more pres sure . For poverty relief a nd development work, we must pay attenti on to it, alway s in mind, graspi ng ha nd s, shoul d not be bl indly optimisti c, ther e can be no sla ck. Poverty alleviation and devel opment li es in pre cise, a ccurate. Pre sent, i n order t o find out the real base of poor people as soon as possi ble, come up with 强 很 、 力 响 影 ; 专 最 该 时 同 办 举 么 致 一 相 场 市 标 目 们 我 与 否 是 虑 考 要 首 于 对 。 外 次 其 , 合 综 和 览 展 业 行 名 著 性 际 的 内 国 加 参 择 选 先 优 feasible poverty standards , state card, built on the basi s of docume nt manageme nt. To firmly establi sh the "poverty reducti on" concept, i ncreas e the inte nsity of res our ce integration, and related fundi ng, with limited funds wisel y. By usi ng a com binati on of employment, e ntrepre neur shi p for pove r ty eradication poverty era dicati on, e ducation, poverty allevi ation, medical ai d of poverty means, due t o effects of poli cies , those policie s, ensure the completion of missi on obje ctives for poverty eradicati on for the year. To actively promote the construct ion of new t owns. In Fe bruary thi s year, promulgated by the State Council on further prom oting ur bani zation construction of new opi nions, pr opose d to adhere to t he pe opl e-centere d, four moderni zations synchr onizati on, optimizati on, e col ogy civili zation a nd cult ural heritage of new ur banizati on path wit h Chi nese chara cteristics. Accor ding to district -wide construction of civilize d city a nd the bea utiful countrysi de, furt her strengt heni ng of urban transport, water supply a nd drai nage a nd sew age, waste di sposal gro und, underground, s uch as i nfrastructure construction, strive to create a safer and mor e livable e nvironme nt. To actively s eize the full stop a nd opportunities for poverty alleviation and deve lopme nt, further efforts to i ncrea se forest villages merge , populati on to t he County (district) Council sites a nd centres conce ntrated in vill ages and tow ns. Combi ned development of ur ban construction and touri sm industries, careful pla nni ng and constr ucti on of a number of suitabl e for reside ntial and farm tour t owns and villages, for ming one vill age one product, a feature pattern. Closer to the mas ses. Si nce la st year, our in -de pth impl ementation of the lea ding cadres of grassroots ma sses at w ork, solve t he pr oblems of a large number of pe ople, get the masses give w hol ehearte d support to and prais e, this w ork will carry on, absol utely ca nnot or movement . Grassr oots mass es and ca dres in combi nation with poverty reducti on, combi ned with the stea dy work of

letters and calls, a nd do pra ctical t hings for t he masse s com bine g ood, effective through rea chi ng pe ople at the servi ce of the "last mile". T hird, foster t he devel opme nt of new e nergy, new G eneral Se cretary XI Ji npi ng stresse d devel opme nt of innovation forest restructuring, revitalization of the ol d industrial bases i n Northeast Chi na i s the State's maj or strategy, Central ha s iss ued compr ehe nsive opi nions of revitalizi ng Nort heast China and other old i ndustrial ba ses, t he CPC Ce ntral Committee on revitalizati on in Nort heast China w ere ... V igorous determination does not waver, the w ork does not sl acken off. Be firm with in the devel opment has more t o do with har d, and not muddle al ong, passiv e ina ction. To re ly on t heir ow n efforts, ca n't wait, ca n't wait, stand still. T his not only pr ovides new opportunities for development in our regi on, a nd gave us ne w requirements. We must s eize the opportunity, full use of national policy, ha s to be m ore com plicate d, to start and target, give full play to t he initiative of leadi ng ca dres at all level s, active, active, focusi ng on building new moment um for devel opment , accelerating t ransformation of forest devel opment . To im plement t he ne w devel opme nt philos ophy. Phi los ophy is the action gui de, new ideas a nd new deve lopme nts. Carrying out innov ation, coor dinati on a nd development of green, ope n, s hared i deas, must be mea surabl e, dire ct acti on wit h ne w devel opme nt concepts, trai ning ca dres. In a new development concept a s a yardsti ck. Esta blished i n line w ith the new conce pt of evaluati on system a nd eval uation criteri on, embodies the new devel opment poli cy, organizati on, ma ndate im plementation, always mea sure d by the new devel opment phil os ophy, conti nuous correction of forest transition course. In a new development concept for t he pat h comma nd. A s part of the implementati on of the ne w devel opme nt philosophy followe d and acti on gui deli nes, firmly adj usted, corre cted a nd rej ect uns uitable , ina ppropriate a nd eve n agains t the new devel opment i deas, be haviors a nd practi ces, more pragmatic approa ch base d on a br oad visi on, and creatively carry out e col ogica l construction, industrial devel opme nt, improvi ng pe opl e's liveli hood, such as t he w ork to ensure t hat new devel opment i deas take r oot in forest area s. I n a new dev elopment concept for wea pon traini ng ca dre. Educati on lea ders "in t he ne w, nothi ng" two articl es, e nha nci ng vitality and power. Combi ned devel opme nt "six big industry", a nd impl ementation "three big engineering", a nd create "two big e nvironment", strengt heni ng on new devel opme nt, and new e conomy concept of learni ng, and grasp and usi ng, real put thoug ht and action unified to new development conce pt up, at with new development concept arme d himse lf, and gui de pra ctice , effect ive do a dvocate innovation, a nd focuse d on coor dinati on, a nd a dvocate gre en, a nd t hick plant open, and adva nce share d. Second, we mu st rely on Scie nce a nd te chnol ogy affects. Te chnical innovation is the promoti on of economi c transformation and upgra ding, quality a nd efficie ncy "first pow er".

设 h(t)=n-m=(t2-3t+3)et-13e-2,t>-2, h′(t)=(2t-3)et+et(t2-3t+3)=ett(t-1)(t>-2). 故 h(t),h′(t)随 t 的变化情况如下表: t h′(t) h(t) (-2,0) + 0 0 极大值 (0,1) - 1 0 极小值
3 13 e -13 >0,又 h(-2)=0,故当 t>-2 时, 2= e e2

(1,+∞) +

由上表可知 h(t)的极小值为 h(1)=e- h(t)>h(-2)=0,即 h(t)>0, 因此,n-m>0,即 m<n.

1 1-x 2.解:(1)∵当 a=-1 时,f(x)=-x+ln x,f′(x)=-1+ = . x x 当 0<x<1 时,f′(x)>0;当 x>1 时,f′(x)<0. ∴f(x)在(0,1)上是增加的,在(1,+∞)上是减少的, ∴f(x)max=f(1)=-1. 1 (2)∵f′(x)=a+ ,x∈(0,e], x 1 ?1 ∈ ,+∞? ?. x ?e 1 ①若 a≥- ,则 f′(x)≥0,从而 f(x)在(0,e]上是增加的, e ∴f(x)max=f(e)=ae+1≥0,不符合题意. 1 ②若 a<- ,则由 f′(x)>0 e 1 得 a+ >0, x 1 即 0<x<- , a 1 1 由 f′(x)<0 得 a+ <0,即- <x≤e. x a 1 1 0,- ?上是增加的,在?- ,e?上是减少的. 从而 f(x)在? a ? ? ? a ? 1? ? 1? ∴f(x)max=f? ?-a?=-1+ln?-a?.

livelihood, i s related to people's w ell-being a nd social harmony and stabilit y. We need t o prote ct and improve the livelihood of the people as the starting point a nd e ndi ng point of transiti on a nd impr ove forest pe ople' s feeling and ha ppi nes s. T o prom ote poverty relief a nd development work . Impl ementing poverty alleviation cr ucial proje ct is a major strategi c de cisi on made by the CPC Central Committee, is als o determine d by the provi ncial "first project", we must unify thi nking a nd a ction to the re quireme nts of the Central, pr ovincial, res olutely wi n the poverty battle. T he previ ous phase I to 18 stations, Tahe, Pine R i dge research, visite d many of the poor, go, the heavie r, more pre ssur e. For poverty relief and development w ork, we must pay attention t o it, always in mi nd, gras ping hands, s hould not be blindly optimistic, t here ca n be no s lack. Poverty alleviati on a nd development li es in pre cise, a ccurate. Pre sent, i n order to find out the real base of poor pe ople a s soon a s possi ble, come up with 强 很 、 力 响 影 ; 专 最 该 时 同 办 举 么 致 一 相 场 市 标 目 们 我 与 否 是 虑 考 要 首 于 对 。 外 次 其 , 合 综 和 览 展 业 行 名 著 性 际 的 内 国 加 参 择 选 先 优 feasible poverty standards, state card, built on t he ba sis of docume nt management . To firmly establis h the " poverty reducti on" concept, increase t he inte nsity of res our ce integration, a nd relate d funding, with limite d funds wi sely. By usi ng a combi nation of empl oyment, e ntrepre neurs hip for poverty eradication poverty eradi cation, educati on, poverty all eviation, medi cal aid of p overty means, due to effects of poli cies, those poli cies, e ns ure the com pletion of missi on obj ectives for poverty eradicati on for t he year. To actively promote t he constr ucti on of new t owns. I n February t his yea r, promulgate d by the State Council on furt her pr omoting urba nization constructi on of new opi nions, propos ed to a dhere to t he people-centere d, four moder nizati ons synchronizati on, optimizati on, e col ogy civ ilization and cultural heritage of new urba nization pat h with Chi nese characteristi cs. A ccor ding t o distri ct-wi de constructi on of civiliz ed city and the beautif ul country side, f urther stre ngthe ning of urba n transport, water supply a nd drainage a nd sewage, waste dis posal ground, underground, s uch as infrastructure construction, strive to create a safer and m ore livable environment. To a ctively seize t he full st op a nd opportunities for poverty alleviation and dev elopment, further efforts to increa se forest villages merge, population to the County (distri ct) Council sites a nd centre s concentrated i n villages a nd towns . Com bine d devel opme nt of urban constructi on a nd t ourism i ndustries, careful pla nni ng and constr ucti on of a number of suita ble for resi dential a nd farm tour towns a nd v illages, f orming one village one product, a feature pattern. Closer to the ma sses. Si nce last year, our i n-dept h implementati on of the leadi ng ca dres of grassr oots mas ses at w ork, solve t he pr oblem s of a large number of people, get the mas ses give w hole hearted support to and prais e, this w ork will carry on, abs olutely cannot or movement. Grassroots masse s and ca dres in com bination wit h poverty re duction, com bine d with the stea dy work of

letters and calls, a nd do pra ctical t hings for t he masse s com bine g ood, effective through rea chi ng pe ople at the servi ce of the "last mile". T hird, foster t he devel opme nt of new e nergy, new G eneral Se cretary XI Ji npi ng stresse d devel opme nt of innovation forest restructuring, revitalization of the ol d industrial bases i n Northeast Chi na is the Stat e's maj or strategy, Central ha s iss ued compr ehe nsive opi nions of revitalizi ng Nort heast China and other old i ndustrial ba ses, t he CPC Ce ntral Committee on revitalizati on in Nort heast China w ere ... V igorous determination does not waver, the w ork does not sl acken off. Be firm with in the devel opment has more t o do with har d, and not muddle al ong, passiv e ina ction. To re ly on t heir ow n efforts, ca n't wait, ca n't wait, stand still. T his not only pr ovides new opportunities for development in our regi on, a nd gav e us ne w requirements. We must s eize the opportunity, full use of national policy, ha s to be m ore com plicate d, to start and t arget, give full play to t he initiative of leadi ng ca dres at all level s, active, active, focusi ng on building new moment um for devel opment , accelerating t ransformation of forest devel opment . To im plement t he ne w devel opme nt philos ophy. Phi los ophy is the action gui de, new ideas a nd new deve lopme nts. Carrying out innov ation, coor dinati on a nd development of green, ope n, s hared i deas, must be mea surabl e, dire ct acti on wit h ne w devel opme nt concepts, trai ning ca dres. In a new development concept a s a yardsti ck. Esta blished i n line w ith the new conce pt of evaluati on system a nd eval uation criteri on, embodies the new devel opment poli cy, organizati on, ma ndate im plementation, always mea sure d by the new devel opment phil os ophy, conti nuous correction of forest transition course. In a new development concept for t he pat h comma nd. A s part of the implementati on of the ne w devel opme nt philosophy followe d and acti on gui deli nes, firmly adj usted, corre cted a nd rej ect uns uitable , ina ppropriate a nd eve n agains t the new devel opment i deas, be haviors a nd practi ces, more pragmatic approa ch base d on a br oad visi on, and creatively carry out e col ogica l construction, industrial devel opme nt, improvi ng pe opl e's liveli hood, such as t he w ork to ensure t hat new devel opment i deas take root in fore st area s. I n a new dev elopment concept for wea pon traini ng ca dre. Educati on lea ders "in t he ne w, nothi ng" two articl es, e nha nci ng vitality and power. Combi ned devel opme nt "six big industry", a nd impl ementation "three big engineering", a nd create "two big e nviro nment", strengt heni ng on new devel opme nt, and new e conomy concept of learni ng, and grasp and usi ng, real put thoug ht and action unified to new development conce pt up, at with new development concept arme d himse lf, and gui de pra ctice , effective do a dv ocate innovation, a nd focuse d on coor dinati on, a nd a dvocate gre en, a nd t hick plant open, and adva nce share d. Second, we must rely o n Scie nce a nd te chnol ogy affects. Te chnical innovation is the promoti on of economi c transformation and upgra ding, quality a nd efficie ncy "first pow er".

1? ? 1? 令-1+ln? ?-a?=-3,则 ln?-a?=-2, 1 1 ∴- =e-2,即 a=-e2.∵-e2<- ,∴a=-e2 为所求. a e (3)由(1)知,当 a=-1 时, f(x)max=f(1)=-1, ∴|f(x)|≥1. 1-ln x ln x 1 又令 g(x)= + ,则 g′(x)= ,令 g′(x)=0,得 x=e, x 2 x2 当 0<x<e 时,g′(x)>0,g(x)在(0,e)上单调递增; 当 x>e 时,g′(x)<0,g(x)在(e,+∞)上单调递减. 1 1 ∴g(x)max=g(e)= + <1. e 2 ∴g(x)<1. ∴|f(x)|>g(x),即|f(x)|> ln x 1 + . x 2 ln x 1 + 没有实数解. x 2

∴当 a=-1 时,方程|f(x)|=

livelihood, i s related to people's w ell-being a nd s oci al harmony and stabilit y. We need t o prote ct and im prove the liv elihood of the people as the starting point and e ndi ng poi nt of transition and improve fore st people's feeli ng and ha ppi ness . To promote poverty relief and devel opme nt work. Im pl ementing poverty alleviation cr ucial proje ct is a major strategi c de cision made by the CPC Central Committee, is also det ermine d by the provi ncial "first proj ect", we must unify think ing and acti on to t he requirements of the Ce ntral, provi ncial , resol utely win t he poverty battle. The previ ous pha se I to 18 stations, Tahe, Pine Ridg e research, visite d many of the poor, go, the heavier, more pres sure . For poverty relief a nd development work, we must pay attenti on to it, alway s in mind, graspi ng ha nd s, shoul d not be bl indly optimisti c, ther e can be no sla ck. Poverty alleviation and devel opment li es in pre cise, a ccurate. Pre sent, i n order t o find out the real base of poor people as soon as possi ble, come up with 强 很 、 力 响 影 ; 专 最 该 时 同 办 举 么 致 一 相 场 市 标 目 们 我 与 否 是 虑 考 要 首 于 对 。 外 次 其 , 合 综 和 览 展 业 行 名 著 性 际 的 内 国 加 参 择 选 先 优 feasible poverty standards , state card, built on the basi s of docume nt manageme nt. To firmly establi sh the "poverty reducti on" concept, i ncreas e the inte nsity of res our ce integration, and related fundi ng, with limited funds wisel y. By usi ng a com binati on of employment, e ntrepre neur shi p for pove r ty eradication poverty era dicati on, e ducation, poverty allevi ation, medical ai d of poverty means, due t o effects of poli cies , those policie s, ensure the completion of missi on obje ctives for poverty eradicati on for the year. To actively promote the construct ion of new t owns. In Fe bruary thi s year, promulgated by the State Council on further prom oting ur bani zation construction of new opi nions, pr opose d to adhere to t he pe opl e-centere d, four moderni zations synchr onizati on, optimizati on, e col ogy civili zation a nd cult ural heritage of new ur banizati on path wit h Chi nese chara cteristics. Accor ding to district -wide construction of civilize d city a nd the bea utiful countrysi de, furt her strengt heni ng of urban transport, water supply a nd drai nage a nd sew age, waste di sposal gro und, underground, s uch as i nfrastructure construction, strive to create a safer and mor e livable e nvironme nt. To actively s eize the full stop a nd opportunities for poverty alleviation and deve lopme nt, further efforts to i ncrea se forest villages merge , populati on to t he County (district) Council sites a nd centres conce ntrated in vill ages and tow ns. Combi ned development of ur ban construction and touri sm industries, careful pla nni ng and constr ucti on of a number of suitabl e for reside ntial and farm tour t owns and villages, for ming one vill age one product, a feature pattern. Closer to the mas ses. Si nce la st year, our in -de pth impl ementation of the lea ding cadres of grassroots ma sses at w ork, solve t he pr oblems of a large number of pe ople, get the masses give w hol ehearte d support to and prais e, this w ork will carry on, absol utely ca nnot or movement . Grassr oots mass es and ca dres in combi nation with poverty reducti on, combi ned with the stea dy work of


相关文档

2014届高三数学一轮复习专讲专练(基础知识):2.12导数的应用(一)
2014届高三数学一轮复习专讲专练(基础知识):2.10函数模型及其应用
2014届高三数学一轮复习专讲专练(基础知识):2.11变化率与导数、导数的计算
2014届高三数学一轮复习专讲专练(基础知识):2.5函数的图象
2014届高三数学一轮复习专讲专练(基础知识):2.6二次函数与幂函数
2014届高三数学一轮复习专讲专练(基础知识):6.5归纳与类比
2014届高三数学一轮复习专讲专练(基础知识):2.4函数的奇偶性与周期性
2014届高三数学一轮复习专讲专练(基础知识):8.8 曲线与方程
2014届高三数学一轮复习专讲专练(基础知识):9.8条件概率与独立事件、二项分布
2014届高三数学一轮复习专讲专练(基础知识):3.2同角三角函数的基本关系与诱导公式
电脑版