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已知函数f(x)= http://picflow.koolearn.com/upload/papers/20140823/20140823150838094708.gif的图像如图所示, 则下列关于a、b、c符号判断正确的是(   )

发布时间:2021-07-16

A.a>0 b<0 c<0

B.a>0 b>0 c>0

C.a<0 b<0 c<0

D.a<0 b>0 c<0http://picflow.koolearn.com/upload/papers/20140823/201408231508381251244.gif

试卷相关题目

  • 1函数 http://picflow.koolearn.com/upload/papers/20140823/20140823144138312270.gif在定义域 http://picflow.koolearn.com/upload/papers/20140823/20140823144138327204.gif内可导,若 http://picflow.koolearn.com/upload/papers/20140823/20140823144138499445.gif,且当 http://picflow.koolearn.com/upload/papers/20140823/20140823144138515446.gif时, http://picflow.koolearn.com/upload/papers/20140823/20140823144138530446.gif,设 http://picflow.koolearn.com/upload/papers/20140823/20140823144138546332.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823144138561373.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823144138577304.gif,则

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823144138577277.gif

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823144138593285.gif

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823144138702283.gif 

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823144138717278.gif

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  • 2函数 http://picflow.koolearn.com/upload/papers/20140823/20140823142517039359.gif的单调递增区间是(***)

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823142517054401.gif

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823142517070411.gif

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823142517086409.gif

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823142517101421.gif

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  • 3设定义在R上的函数 http://picflow.koolearn.com/upload/papers/20140823/20140823142354249270.gif满足以下两个条件: (1)对 http://picflow.koolearn.com/upload/papers/20140823/20140823142354343387.gif,都有 http://picflow.koolearn.com/upload/papers/20140823/20140823142354359448.gif成立; (2)当 http://picflow.koolearn.com/upload/papers/20140823/20140823142354374247.gif时, http://picflow.koolearn.com/upload/papers/20140823/20140823142354390629.gif 则下列不等关系中正确的是(    )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823142354437431.gif

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823142354749408.gif

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823142354764429.gif

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823142354764518.gif

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  • 4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

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  • 5http://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

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  • 6已知 R上可导函数 http://picflow.koolearn.com/upload/papers/20140823/20140823151446457268.gif的图象如图所示,则 http://picflow.koolearn.com/upload/papers/20140823/2014082315144647365.gif不等式 http://picflow.koolearn.com/upload/papers/20140823/20140823151446473610.gif的解集(  )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823151446488538.gif

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823151446520521.gif

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823151446520658.gif

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823151446535642.gif http://picflow.koolearn.com/upload/papers/20140823/201408231514465512928.jpg

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  • 7http://picflow.koolearn.com/upload/papers/20140823/2014082315154603472.gif于R上可导的任意函数f(x),满足(x-1)f ′(x)≥0,则必有(   )

    A.f(0)+f(2)<2f(1)

    B.f(0)+f(2)≥2f(1)

    C.f(0)+f(2)≤2f(1)

    D.f(0)+f(2)>2f(1)

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  • 8若对可导函数 f( x), g( x),当 x∈[0,1]时,恒有 http://picflow.koolearn.com/upload/papers/20140823/20140823151250752776.gif,已知α、β是一个锐角三角形 http://picflow.koolearn.com/upload/papers/20140823/2014082315125076785.gif的两个内角,且α≠β,记 F( x)= http://picflow.koolearn.com/upload/papers/20140823/20140823151250783382.gif( g( x) ≠0),则下列不等式正确的是(  )

    A.F(sinα)

    B.F(cosα)> F(sinβ)

    C.F(cosα)> F(chttp://picflow.koolearn.com/upload/papers/20140823/2014082315125079972.gifosβ)

    D.F(cosα)< F(cosβ)

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  • 9设函数 http://picflow.koolearn.com/upload/papers/20140823/20140823151320704270.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823151320720247.gif)的导函数为 http://picflow.koolearn.com/upload/papers/20140823/20140823151320751277.gif,满足 http://picflow.koolearn.com/upload/papers/20140823/20140823151320813396.gif,则当 http://picflow.koolearn.com/upload/papers/20140823/20140823151320844246.gif时, http://picflow.koolearn.com/upload/papers/20140823/20140823151320844276.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823151320860325.gif的大小关系为

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823151320876287.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823151320860325.gif

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823151320907297.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823151320860325.gif

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823151320969296.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823151320860325.gif

    D.不能确定

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  • 10设函数 f( x)= x 3- http://picflow.koolearn.com/upload/papers/20140823/20140823151250034242.gif-2 x+5,若对任意 x∈[-1,2],都有 f( x) http://picflow.koolearn.com/upload/papers/20140823/2014082315125005085.gif> m,则实数 m的取值范围是(  )

    A.(-1,0)

    B.(-1,+∞)

    C.(1,2)

    D.(-∞, http://picflow.koolearn.com/upload/papers/20140823/20140823151250065220.gif

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