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已知定义在 http://picflow.koolearn.com/upload/papers/20140824/20140824035807186303.png上的函数 http://picflow.koolearn.com/upload/papers/20140824/20140824035807202447.png,其导函数 http://picflow.koolearn.com/upload/papers/20140824/20140824035807217481.png的图像如图所示,则下列叙述正确的是(   ) http://picflow.koolearn.com/upload/papers/20140824/201408240358072335103.png

发布时间:2021-07-16

A.http://picflow.koolearn.com/upload/papers/20140824/20140824035807264791.png

B.http://picflow.koolearn.com/upload/papers/20140824/20140824035807280741.png

C.http://picflow.koolearn.com/upload/papers/20140824/20140824035807295754.png

D.http://picflow.koolearn.com/upload/papers/20140824/20140824035807311761.png

试卷相关题目

  • 1已知函数 http://picflow.koolearn.com/upload/papers/20140824/20140824041532029495.png的导函数如图所示,若 http://picflow.koolearn.com/upload/papers/20140824/20140824041532045544.png为锐角三角形,则下列不等式一定成立的是(   ) http://picflow.koolearn.com/upload/papers/20140824/201408240415320606486.png

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824041532076868.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824041532092923.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824041532107847.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824041532123916.png

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  • 2已知函数 http://picflow.koolearn.com/upload/papers/20140824/201408240345098371193.png的单调递减区间是(0,4),则 http://picflow.koolearn.com/upload/papers/20140824/20140824034509852337.png=(   )

    A.3

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824034509868327.png

    C.2

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824034509884338.png

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  • 3直线 y= a与函数 y= x 3-3 x的图象有三个相异的交点,则 a的取值范围为 (  )

    A.(-2,2)

    B.[-2,2]

    C.[2,+∞)

    D.(-∞,-2]

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  • 4已知f(x)=x 3-6x 2+9x-abc,a<b<c,且f(a)=f(b)=f(c)=0.现给出如下结论: ①f(0)f(1)>0;②f(0)f(1)<0;③f(0)f(3)>0; ④f(0)f(3)<0. 其中正确结论的序号是(  )

    A.①③

    B.①④

    C.②③

    D.②④

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  • 5函数f(x)= http://picflow.koolearn.com/upload/papers/20140824/20140824035620529327.pngx 3- http://picflow.koolearn.com/upload/papers/20140824/20140824035620544338.pngax 2+(a-1)x+1在区间(1,5)上为减函数,在区间(6,+∞)上为增函数,则实数a的取值范围是(  )

    A.[4,5]

    B.[3,5]

    C.[5,6]

    D.[6,7]

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  • 6设函数f(x)的定义域为R,x 0(x 0≠0)是f(x)的极大值点,以下结论一定正确的是(  )

    A.?x∈R,f(x)≤f(x0)

    B.-x0是f(-x)的极小值点

    C.-x0是-f(x)的极小值点

    D.-x0是-f(-x)的极小值点

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  • 7函数 f( x)= xcos x-sin x在下面哪个区间内是增函数 (  )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824040517201781.png

    B.(π,2π)

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824040517216822.png

    D.(2π,3π)

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  • 8函数f(x)的定义域是R,f(0)=2,对任意x∈R,f(x)+f′(x)>1,则不等式e x·f(x)>e x+1的解集为(  )

    A.{x|x>0}

    B.{x|x<0}

    C.{x|x<-1或x>1}

    D.{x|x<-1或0<x<1}

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  • 9http://picflow.koolearn.com/upload/papers/20140824/20140824042955225449.png,则 http://picflow.koolearn.com/upload/papers/20140824/20140824042955257409.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824042955272719.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824042955288509.png的大小关系是(     )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824042955319992.png

    B.http://picflow.koolearn.com/upload/papers/20140824/201408240429553351019.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824042955350972.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824042955366996.png

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  • 10设f(x)是定义在R上以2为周期的偶函数,已知x∈(0,1)时,f(x)=lo http://picflow.koolearn.com/upload/papers/20140824/20140824035642213344.png(1-x),则函数f(x)在(1,2)上(  )

    A.是增函数,且f(x)<0

    B.是增函数,且f(x)>0

    C.是减函数,且f(x)<0

    D.是减函数,且f(x)>0

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