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定义在 http://picflow.koolearn.com/upload/papers/20140823/20140823121640002204.gif上的函数 http://picflow.koolearn.com/upload/papers/20140823/20140823121640142287.gif满足 http://picflow.koolearn.com/upload/papers/20140823/20140823121640173582.gif,当 http://picflow.koolearn.com/upload/papers/20140823/20140823121640204234.gif时, http://picflow.koolearn.com/upload/papers/20140823/20140823121640142287.gif单调递增,如果 http://picflow.koolearn.com/upload/papers/20140823/20140823121640236414.gif,且 http://picflow.koolearn.com/upload/papers/20140823/20140823121640251599.gif,则 http://picflow.koolearn.com/upload/papers/20140823/20140823121640267536.gif的值为(   )

发布时间:2021-07-16

A.恒小于http://picflow.koolearn.com/upload/papers/20140823/20140823121640298197.gif

B.恒大于http://picflow.koolearn.com/upload/papers/20140823/20140823121640298197.gif

C.可能为http://picflow.koolearn.com/upload/papers/20140823/20140823121640298197.gif

D.可正可负

试卷相关题目

  • 1如图是函数y=f(x)的导函数y=f′(x)的图象,则下列说法正确的是(  )

    A.f(1)是f(x)的极大值

    B.f(2)是f(x)的极小值

    C.在(1,3)上f(x)递减

    D.在(-1,2)上f(x)递增 http://picflow.koolearn.com/upload/papers/20140611/201406111412340462725.png

    开始考试点击查看答案
  • 2对于R上可导的任意函数f(x),若满足x?f′(x)≥0,则必有(  )

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

    B.f(-1)+f(1)>2f(0)

    C.f(-1)+f(1)≤2f(0)

    D.f(-1)+f(1)≥2f(0)

    开始考试点击查看答案
  • 3定义域R的奇函数f(x),当x∈(-∞,0)时f(x)+xf′(x)<0恒成立,若a=3f(3),b=f(1),c=-2f(-2),则(  )

    A.a>c>b

    B.c>b>a

    C.c>a>b

    D.a>b>c

    开始考试点击查看答案
  • 4已知可导函数f(x)的导函数为g(x),且满足:①>0;②f(2-x)-f(x)=2-2x,记a=f(2)-1,b=f(π)-π+1,c=f(-1)+2,则a,b,c的大小顺序为(  )

    A.a>b>c

    B.a>c>b

    C.b>c>a

    D.b>a>c

    开始考试点击查看答案
  • 5定义域为 http://picflow.koolearn.com/upload/papers/20140823/20140823121640626206.gif的函数 http://picflow.koolearn.com/upload/papers/20140823/20140823121640641884.gif,若关于 http://picflow.koolearn.com/upload/papers/20140823/20140823121640657187.gif的方程 http://picflow.koolearn.com/upload/papers/20140823/20140823121640672603.gif恰有5个不同的实数解 http://picflow.koolearn.com/upload/papers/20140823/20140823121640688860.gif等于(    )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823121640704226.gif

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823121640719221.gif

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823121640750230.gif

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823121640844256.gif

    开始考试点击查看答案
  • 6下列区间是函数 http://picflow.koolearn.com/upload/papers/20140823/20140823121124850504.gif的一个减区间的是(      )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823121124866293.gif

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823121124928296.gif

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823121124944422.gif

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823121124975426.gif

    开始考试点击查看答案
  • 7函数 http://picflow.koolearn.com/upload/papers/20140823/20140823121244894622.gif,其中 http://picflow.koolearn.com/upload/papers/20140823/20140823121244909260.gif为实数,当 http://picflow.koolearn.com/upload/papers/20140823/20140823121244925434.gif时, http://picflow.koolearn.com/upload/papers/20140823/20140823121245050270.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823121245065204.gif上是(      )

    A.增函数

    B.减函数

    C.常数

    D.无法确定函数的单调性

    开始考试点击查看答案
  • 8已知定义在R上的奇函数f(x),f(1)=2,对任意的x>0,f"(x)>2,则不等式f(x)>2x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
  • 9函数f(x)=ax3+bx2+cx+d的图象如图,且|x1|<|x2|,则有(  ) http://picflow.koolearn.com/upload/papers/20140611/201406111307542577014.png

    A.a>0,b>0,c<0,d>0

    B.a<0,b>0,c<0,d>0

    C.a>0,b<0,c>0,d<0

    D.a<0,b<0,c>0,d>0

    开始考试点击查看答案
  • 10函数 http://picflow.koolearn.com/upload/papers/20140823/20140823121308122718.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823121308138415.gif上是增函数,则实数 http://picflow.koolearn.com/upload/papers/20140823/20140823121308294192.gif的取值范围是(       )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823121308403253.gif

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823121308419240.gif

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823121308434374.gif

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823121308450294.gif

    开始考试点击查看答案
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