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设函数f(x)定义在实数集上,它的图象关于直线x=1对称,且当x≥1时,f(x)=lnx﹣x,则有 

发布时间:2021-07-15

A.http://picflow.koolearn.com/upload/papers/g02/20120821/201208210748077353290.png

B.http://picflow.koolearn.com/upload/papers/g02/20120821/201208210748077803268.png

C.http://picflow.koolearn.com/upload/papers/g02/20120821/201208210748078253292.png

D.http://picflow.koolearn.com/upload/papers/g02/20120821/201208210748078703303.png

试卷相关题目

  • 1已知函数f(x)=-mx3+nx2的图象在点(-1,2)处的切线恰好与直线3x+y=0平行,若 f(x)在区间[t,t+1]上单调递减,则实数t的取值范围是

    A.(-∞,-2]

    B.(-∞,-1]

    C.[-2,-1]

    D.[-2,+∞)

    开始考试点击查看答案
  • 2已知定义在实数集R上的函数f(x)满足f(1)=2,且f(x)的导数 f"(x)在R上恒有f"(x)<1(x∈R),则不等式f(x)<x+1的解集为

    A.(1,+∞)

    B.(﹣∞,﹣1)

    C.(﹣1,1)

    D.(﹣∞,﹣1)∪(1,+∞)

    开始考试点击查看答案
  • 3已知函数f(x)=http://picflow.koolearn.com/upload/papers/g02/20120818/201208180924507971384.png在[1,+∞]上为减函数,则a的取值范围是

    A.0<a

    B.a≥e

    C.a≥

    D.a≥4

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  • 4设f"(x)是函数f(x)的导函数,将y=f(x)和y=f"(x)的图象画在同一个直角坐标系中,不可能正确的是 

    A.http://picflow.koolearn.com/upload/papers/g02/20120828/201208281134316226386.png

    B.http://picflow.koolearn.com/upload/papers/g02/20120828/201208281134316565988.png

    C.http://picflow.koolearn.com/upload/papers/g02/20120828/201208281134316896077.png

    D.http://picflow.koolearn.com/upload/papers/g02/20120828/201208281134320637192.png

    开始考试点击查看答案
  • 5f(x)是定义在(0,+∞)上的非负可导函数,且满足xf"(x)≤f(x),对任意的正数a、b,若a<b,则必有

    A.af(a)≤bf(b)

    B.af(a)≥bf(b)

    C.af(b)≤bf(a)

    D.af(b)≥bf(a)

    开始考试点击查看答案
  • 6若函数y=x3+x2+mx+1是R上的单调函数,则实数m的取值范围是

    A.(http://picflow.koolearn.com/upload/papers/g02/20120818/20120818171914812619.png,+∞)

    B.(﹣∞,http://picflow.koolearn.com/upload/papers/g02/20120818/20120818171914869619.png]

    C.[http://picflow.koolearn.com/upload/papers/g02/20120818/20120818171914926619.png,+∞)

    D.(﹣∞,http://picflow.koolearn.com/upload/papers/g02/20120818/20120818171914983619.png

    开始考试点击查看答案
  • 7对于R上可导的任意函数f(x),若满足(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)

    开始考试点击查看答案
  • 8定义在R上的函数f(x)满足f(4)=1,f"(x)为f(x)的导函数,已知y=f"(x)的图象如图所示,若两个正数a,b满足http://picflow.koolearn.com/upload/papers/g02/20120902/201209021912321062714.png的取值范围是http://picflow.koolearn.com/upload/papers/g02/20120902/201209021912321383615.png

    A.http://picflow.koolearn.com/upload/papers/g02/20120902/201209021912321691392.png

    B.http://picflow.koolearn.com/upload/papers/g02/20120902/201209021912322002383.png

    C.http://picflow.koolearn.com/upload/papers/g02/20120902/201209021912322311251.png

    D.(﹣∞,3)

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  • 9已知函数f(x)(x∈R)满足f(1)=1,且f(x)的导函数http://picflow.koolearn.com/upload/papers/g02/20120903/201209031010010401888.png,则http://picflow.koolearn.com/upload/papers/g02/20120903/201209031010011112214.png的解集为

    A.{x|﹣1<x<1}

    B.{x|x<﹣1}

    C.{x|x<﹣1或x>1}

    D.{x|x>1}

    开始考试点击查看答案
  • 10函数f(x)=(x﹣3)ex的单调递增区间是(   )

    A.(﹣∞,2)  

    B.(0,3)  

    C.(1,4)  

    D.(2,+∞)

    开始考试点击查看答案
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