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已知函数 http://picflow.koolearn.com/upload/papers/20140824/20140824054519155894.png,则( )

发布时间:2021-07-16

A.http://picflow.koolearn.com/upload/papers/20140824/201408240545191711254.png

B.http://picflow.koolearn.com/upload/papers/20140824/201408240545191871241.png

C.http://picflow.koolearn.com/upload/papers/20140824/201408240545192181241.png

D.http://picflow.koolearn.com/upload/papers/20140824/201408240545192331260.png

试卷相关题目

  • 1等比数列{an}中,a1=2,a8=4,函数f(x)=x(x-a1)(x-a2)…(x-a8),则f′(0)=

    A.26

    B.29

    C.212

    D.215

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  • 2已知二次函数f(x)=ax2+bx+c的导数为f′(x),f′(0)>0,对于任意实数x,有f(x)≥0,则http://picflow.koolearn.com/upload/papers/g02/20110104/20110104131550485998.gif的最小值为

    A.3

    B.http://picflow.koolearn.com/upload/papers/g02/20110104/20110104131701079881.gif

    C.2

    D.http://picflow.koolearn.com/upload/papers/g02/20110104/20110104131709063878.gif

    开始考试点击查看答案
  • 3定义方程f(x)= f′(x)的实数根x0叫做函数的“新驻点”,若函数g(x)=x,h(x)=ln(x+1),φ(x)=x3-1的“新驻点”分别为α,β,http://picflow.koolearn.com/upload/papers/g02/20110523/20110523114555756885.gif,则α,β,http://picflow.koolearn.com/upload/papers/g02/20111219/20111219091116001.gif的大小关系为

    A.α>β>http://picflow.koolearn.com/upload/papers/g02/20110523/20110523114555787885.gif

    B.β>α>http://picflow.koolearn.com/upload/papers/g02/20110523/20110523114555787885.gif

    C.http://picflow.koolearn.com/upload/papers/g02/20110523/20110523114555834885.gif>α>β

    D.α>http://picflow.koolearn.com/upload/papers/g02/20110523/20110523114555850885.gif>β

    开始考试点击查看答案
  • 4函数y=xsin2x的导数是

    A.y′=sin2x-xcos2x

    B.y′=sin2x-2xcos2x

    C.y′=sin2x+xcos2x

    D.y′=sin2x+2xcos2x

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  • 5下列结论不正确的是

    A.若y=3,则y′=0

    B.若http://picflow.koolearn.com/upload/papers/g02/20120413/201204130934084561035.gif,则http://picflow.koolearn.com/upload/papers/g02/20120413/201204130934085031112.gif

    C.若http://picflow.koolearn.com/upload/papers/g02/20120413/201204130934085301006.gif,则http://picflow.koolearn.com/upload/papers/g02/20120413/201204130934085591117.gif

    D.若y=3x,则http://picflow.koolearn.com/upload/papers/g02/20120413/201204130934085911052.gif

    开始考试点击查看答案
  • 6已知定义在R上的函数f(x),其导函数f′(x)的大致图像如图所示,则下列叙述正确的是(  ) http://picflow.koolearn.com/upload/papers/20140824/201408240544239782230.jpg

    A.f(b)>f(c)>f(d)

    B.f(b)>f(a)>f(e)

    C.f(c)>f(b)>f(a)

    D.f(c)>f(e)>f(d)

    开始考试点击查看答案
  • 7设函数 http://picflow.koolearn.com/upload/papers/20140824/20140824055132480169.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824055132526775.png若当0 http://picflow.koolearn.com/upload/papers/20140824/20140824055132542560.png时, http://picflow.koolearn.com/upload/papers/20140824/20140824055132558917.png恒成立,则实数m的取值范围是 ( )

    A.(0,1)

    B.(-∞,0)

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824055132573605.png

    D.(-∞,1)

    开始考试点击查看答案
  • 8若定义在R上的函数f(x)的导函数为 http://picflow.koolearn.com/upload/papers/20140824/20140824060602353481.png,且满足 http://picflow.koolearn.com/upload/papers/20140824/20140824060602368634.png,则 http://picflow.koolearn.com/upload/papers/20140824/20140824060602400558.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824060602415684.png的大小关系为(  ).

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824060602400558.png<http://picflow.koolearn.com/upload/papers/20140824/20140824060602415684.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824060602400558.png=http://picflow.koolearn.com/upload/papers/20140824/20140824060602415684.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824060602400558.png>http://picflow.koolearn.com/upload/papers/20140824/20140824060602415684.png

    D.不能确定

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  • 9若函数http://picflow.koolearn.com/upload/papers/g02/20110104/201101041147368131044.gif,则http://picflow.koolearn.com/upload/papers/g02/20110104/20110104114740766936.gif

    A.-7

    B.1

    C.-1

    D.7

    开始考试点击查看答案
  • 10设f(x)是定义在R上的偶函数,当x>0时,f(x)+x f′(x)>0,且f(1)=0,则不等式xf(x)>0的解集为

    A.(-1,0)∪(1,+∞)

    B.(-1,0)∪(0,1)

    C.(-∞,-1)∪(1,+∞)

    D.(-∞,-1)∪(0,1)

    开始考试点击查看答案
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