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已知 http://picflow.koolearn.com/upload/papers/20140824/20140824030800187663.png且关于 http://picflow.koolearn.com/upload/papers/20140824/20140824030800203266.png的函数 http://picflow.koolearn.com/upload/papers/20140824/201408240308002501197.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824030800265299.png上有极值,则 http://picflow.koolearn.com/upload/papers/20140824/20140824030800281292.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824030800281307.png的夹角范围是(  )

发布时间:2021-07-15

A.http://picflow.koolearn.com/upload/papers/20140824/20140824030800296674.png

B.http://picflow.koolearn.com/upload/papers/20140824/20140824030800312520.png

C.http://picflow.koolearn.com/upload/papers/20140824/20140824030800328672.png

D.http://picflow.koolearn.com/upload/papers/20140824/20140824030800343746.png

试卷相关题目

  • 1函数 http://picflow.koolearn.com/upload/papers/20140824/20140824044647433544.png的最大值为(   )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824044647449294.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824044647464264.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824044647480331.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824044647496417.png

    开始考试点击查看答案
  • 2若a>0, b>0, 且函数f(x)=4x 3-ax 2-2bx+2在x=1处有极值,则ab的最大值等于(    )

    A.2

    B.3

    C.6

    D.9

    开始考试点击查看答案
  • 3已知函数 http://picflow.koolearn.com/upload/papers/20140824/201408240440326741069.png, http://picflow.koolearn.com/upload/papers/20140824/20140824044032689481.png是函数 http://picflow.koolearn.com/upload/papers/20140824/20140824044032705447.png的导函数,且 http://picflow.koolearn.com/upload/papers/20140824/20140824044032689481.png有两个零点 http://picflow.koolearn.com/upload/papers/20140824/20140824044032736300.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824044032752331.png( http://picflow.koolearn.com/upload/papers/20140824/20140824044032752429.png),则 http://picflow.koolearn.com/upload/papers/20140824/20140824044032705447.png的最小值为()

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824044032783486.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824044032799496.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824044032814478.png

    D.以上都不对

    开始考试点击查看答案
  • 4设函数 f( x)= xe x,则(  ).

    A.x=1为f(x)的极大值点

    B.x=1为f(x)的极小值点

    C.x=-1为f(x)的极大值点

    D.x=-1为f(x)的极小值点

    开始考试点击查看答案
  • 5下列函数中, x=0是其极值点的是 (  ).

    A.y=-x3

    B.y=cos2x

    C.y=tan x-x

    D.y=http://picflow.koolearn.com/upload/papers/20140824/20140824040518496384.png

    开始考试点击查看答案
  • 6先后抛掷一个质地均匀的骰子两次,其结果记为 http://picflow.koolearn.com/upload/papers/20140824/20140824050747666476.png,其中 http://picflow.koolearn.com/upload/papers/20140824/20140824050747681283.png表示第一次抛掷的结果, http://picflow.koolearn.com/upload/papers/20140824/20140824050747697299.png表示第二次抛掷的结果,则函数 http://picflow.koolearn.com/upload/papers/20140824/20140824050747713848.png有极值点的概率为(   )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824050747728385.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824050747759392.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824050747775370.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824050747791372.png

    开始考试点击查看答案
  • 7方程x 3﹣6x 2+9x﹣4=0的实根的个数为(  )

    B.1

    C.2

    D.3

    开始考试点击查看答案
  • 8函数y=x 4-4x+3在区间[-2,3]上的最小值为(  )

    A.72

    B.36

    C.12

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  • 9某人进行了如下的“三段论”推理:如果 http://picflow.koolearn.com/upload/papers/20140824/20140824024249543605.png,则 http://picflow.koolearn.com/upload/papers/20140824/20140824024249559372.png是函数 http://picflow.koolearn.com/upload/papers/20140824/20140824024249574447.png的极值点,因为函数 http://picflow.koolearn.com/upload/papers/20140824/20140824024249590562.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824024249605365.png处的导数值 http://picflow.koolearn.com/upload/papers/20140824/20140824024249621525.png,所以 http://picflow.koolearn.com/upload/papers/20140824/20140824024249605365.png是函数 http://picflow.koolearn.com/upload/papers/20140824/20140824024249590562.png的极值点.你认为以上推理的 (    )

    A.大前提错误

    B.小前提错误

    C.推理形式错误

    D.结论正确

    开始考试点击查看答案
  • 10已知 http://picflow.koolearn.com/upload/papers/20140824/20140824042058382264.png为自然对数的底数,设函数 http://picflow.koolearn.com/upload/papers/20140824/20140824042058413588.png,则(    )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824042058429206.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824042058444447.png的极小值点

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824042058460223.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824042058444447.png的极小值点

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824042058429206.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824042058444447.png的极大值点

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824042058460223.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824042058444447.png的极大值点

    开始考试点击查看答案
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