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下列结论中正确的是(   )

发布时间:2021-07-16

A.导数为零的点一定是极值点

B.如果在x0附近的左则http://picflow.koolearn.com/upload/papers/20140823/20140823145729679920.gif是极大值

C.如果在x0附近的左则http://picflow.koolearn.com/upload/papers/20140823/20140823145729679920.gif是极小值

D.如果在x0附近的左则http://picflow.koolearn.com/upload/papers/20140823/20140823145729726931.gif是极大值

试卷相关题目

  • 1函数 http://picflow.koolearn.com/upload/papers/20140823/20140823142820105424.gif的单调递增区间是(   )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823142820121404.gif

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823142820183411.gif

    C.(1,4)

    D.(0,3)

    开始考试点击查看答案
  • 2函数 http://picflow.koolearn.com/upload/papers/20140823/20140823144532546424.gif的图象过原点且它的导函数 http://picflow.koolearn.com/upload/papers/20140823/20140823144532562429.gif的图象是如图所示的一条直线, 则 http://picflow.koolearn.com/upload/papers/20140823/20140823144532546424.gif的图象的顶点在(         ) http://picflow.koolearn.com/upload/papers/20140823/201408231445327021019.gif

    A.第一象限

    B.第二象限

    C.第三象限

    D.第四象限

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  • 3设 f "( x)是函数 f( x)的导函数, y= f "( x)的图像如右图所示,则 y= f( x)的图像最有可能的是http://picflow.koolearn.com/upload/papers/20140823/20140823144537679826.gif http://picflow.koolearn.com/upload/papers/20140823/201408231445376942405.gif

    A.

    B.

    C.

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  • 4定义域为R的函数f(x)对任意x都有f(x)=f(4-x),且其 导函数f ’(x)满足(x-2)f ’(x)>0,则当2<a<4时,有(   )

    A.f(2a)

    B.f(2) < f(2a)

    C.f(2)

    D.f(log2a)< f(2a)开始考试点击查看答案

  • 5若曲线 http://picflow.koolearn.com/upload/papers/20140823/20140823142627161665.gif在R上单调递增,则k的取值范围是(     )

    A.k>1或k<-1

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823142627177243.gifhttp://picflow.koolearn.com/upload/papers/20140823/2014082314262719285.gif

    C.k>1

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823142627223374.gif

    开始考试点击查看答案
  • 6对任意 x∈R,函数 f( x)的导数存在,若f′( x)>f(x)且 a>0,则以下正确的是(    )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823142451424571.gif

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823142451455565.gif

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823142451470404.gif

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823142451486403.gif

    开始考试点击查看答案
  • 7已知函数 http://picflow.koolearn.com/upload/papers/20140823/20140823144454716248.gif的导函数为 http://picflow.koolearn.com/upload/papers/20140823/20140823144454732409.gif, http://picflow.koolearn.com/upload/papers/20140823/20140823144454747298.gif,如果 http://picflow.koolearn.com/upload/papers/20140823/20140823144454763418.gif,则实数 http://picflow.koolearn.com/upload/papers/20140823/20140823144454779187.gif的取值范围为( )

    A.(http://picflow.koolearn.com/upload/papers/20140823/20140823144454794395.gif

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823144454810440.gif

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823144454825299.gif

    D.(-1,1)

    开始考试点击查看答案
  • 8http://picflow.koolearn.com/upload/papers/20140823/20140823142534823725.gif, 则 http://picflow.koolearn.com/upload/papers/20140823/20140823142534838340.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823142534994305.gif的大小关系是(  )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823142535010363.gifhttp://picflow.koolearn.com/upload/papers/20140823/2014082314253502686.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823142535041346.gif

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823142535010363.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823142535072137.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823142535041346.gif

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823142535010363.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823142535166138.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823142535041346.gif

    D.不能确定

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  • 9http://picflow.koolearn.com/upload/papers/20140823/20140823145246601763.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823145246617425.gif内单调递增, http://picflow.koolearn.com/upload/papers/20140823/20140823145246633426.gif,则 http://picflow.koolearn.com/upload/papers/20140823/20140823145246648202.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823145246664199.gif

    A.充分不必要条件

    B.必要不充分条件

    C.充分必要条件

    D.既不充分也不必要条件

    开始考试点击查看答案
  • 10函数f(x)= http://picflow.koolearn.com/upload/papers/20140823/20140823143210159219.gifx 3+ax+1在(-∞,-1)上为增函数,在(-1,1)上为减函数,则f(1)为(   )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823143210221221.gif

    B.1

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823143210159219.gif

    D.-1

    开始考试点击查看答案
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