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若函数 http://picflow.koolearn.com/upload/papers/20140823/20140823121244504504.gif的递减区间为 http://picflow.koolearn.com/upload/papers/20140823/20140823121244519613.gif,则 http://picflow.koolearn.com/upload/papers/20140823/20140823121244628192.gif的取值范围是(       )

发布时间:2021-07-16

A.http://picflow.koolearn.com/upload/papers/20140823/20140823121244644250.gif

B.http://picflow.koolearn.com/upload/papers/20140823/20140823121244675300.gif

C.http://picflow.koolearn.com/upload/papers/20140823/20140823121244691234.gif

D.http://picflow.koolearn.com/upload/papers/20140823/20140823121244706286.gif

试卷相关题目

  • 1函数y=x3-2ax+a在(0,1)内有极小值,则实数a的取值范围是(  )

    A.(0,3)

    B.(0,32)

    C.(0,+∞)

    D.(-∞,3)

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  • 2函数 http://picflow.koolearn.com/upload/papers/20140823/20140823121347949467.gif在[0, http://picflow.koolearn.com/upload/papers/20140823/20140823121347965233.gif]上取得最大值时,x的值为(   )

    A.1

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823121347996239.gif

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823121348011230.gif

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823121347965233.gif

    开始考试点击查看答案
  • 3如图所示为二次函数f(x)的图象,若函数g(x)=f"(x)f(x),(f"(x)是f(x)的导函数),则g(x)的图象是(  )

    A.http://picflow.koolearn.com/upload/papers/20140611/201406111310064993053.png

    B.http://picflow.koolearn.com/upload/papers/20140611/201406111310065773254.png

    C.http://picflow.koolearn.com/upload/papers/20140611/201406111310069362527.png

    D.http://picflow.koolearn.com/upload/papers/20140611/201406111310070292729.png http://picflow.koolearn.com/upload/papers/20140611/201406111310074043587.png

    开始考试点击查看答案
  • 4函数f(x)=x3+x2+cx+d(a<b)在R上单调递增,则的最小值为(  )

    A.1

    B.3

    C.4

    D.9

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  • 5函数y=的图象大致是(  )

    A.http://picflow.koolearn.com/upload/papers/20140611/201406111408211862694.png

    B.http://picflow.koolearn.com/upload/papers/20140611/201406111408213102910.png

    C.http://picflow.koolearn.com/upload/papers/20140611/201406111408213882756.png

    D.http://picflow.koolearn.com/upload/papers/20140611/201406111408221533241.png

    开始考试点击查看答案
  • 6若函数 http://picflow.koolearn.com/upload/papers/20140823/20140823120006327843.gif在区间 http://picflow.koolearn.com/upload/papers/20140823/20140823120006342346.gif内单调递增,则 a的取值范围是             http://picflow.koolearn.com/upload/papers/20140823/20140823120006389332.jpg

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823120006420311.gif

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823120006436424.gif

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823120006467474.gif

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823120006483327.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823120006389332.jpg

    开始考试点击查看答案
  • 7如图是函数y=f(x)的导函数y=f′(x)的图象,则下面判断正确的是(  )

    A.在区间(-3,1)内f(x)是增函数

    B.在x=2时f(x)取得极大值

    C.在(4,5)内f(x)是增函数

    D.在x=2时f(x)取到极小值 http://picflow.koolearn.com/upload/papers/20140611/2014061114174380111625.png

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  • 8如图所示是y=f(x)的导数y=f′(x)的图象,下列四个结论: ①f(x)在区间(-3,1)上是增函数; ②x=-1是f(x)的极小值点; ③f(x)在区间(2,4)上是减函数,在区间(-1,2)上是增函数; ④x=2是f(x)的极小值点. 其中正确的结论是(  )

    A.①②③

    B.②③

    C.③④

    D.①③④ http://picflow.koolearn.com/upload/papers/20140611/201406111323075451984.png

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  • 9如图是导函数y=f′(x)的图象,在标记的点(  )处,函数y=f(x)有极大值.

    A.x2

    B.x3

    C.x5

    D.x4 http://picflow.koolearn.com/upload/papers/20140611/201406111341057267723.png

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  • 10函数f(x)=(x-3)ex的单调递增区间是(  )

    A.(2,+∞)

    B.(-∞,2)

    C.(1,4)

    D.(0,3)

    开始考试点击查看答案
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