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函数 http://picflow.koolearn.com/upload/papers/20140824/20140824050502664799.png已知 http://picflow.koolearn.com/upload/papers/20140824/20140824050502664550.png时取得极值,则 http://picflow.koolearn.com/upload/papers/20140824/20140824050502680332.png的值等于(   )

发布时间:2021-07-15

A.2

B.3

C.4

D.5

试卷相关题目

  • 1若a>0,b>0,且函数 http://picflow.koolearn.com/upload/papers/20140824/20140824045051184822.png处有极值,则ab的最大值等于(   ).

    A.2

    B.3

    C.6

    D.9

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  • 2函数 http://picflow.koolearn.com/upload/papers/20140824/20140824042451275725.png有且仅有两个不同的零点,则 http://picflow.koolearn.com/upload/papers/20140824/20140824042451306299.png的值为(   )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824042451321490.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824042451337468.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824042451353543.png

    D.不确定

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  • 3等差数列 http://picflow.koolearn.com/upload/papers/20140824/20140824034208206477.png中的 http://picflow.koolearn.com/upload/papers/20140824/20140824034208221425.png是函数 http://picflow.koolearn.com/upload/papers/20140824/20140824034208237984.png的极值点,则 http://picflow.koolearn.com/upload/papers/20140824/20140824034208252579.png(   )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824034208252273.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824034208268249.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824034208299235.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824034208315265.png

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  • 4记函数 http://picflow.koolearn.com/upload/papers/20140824/20140824023834077877.png的最大值为M,最小值为m,则 http://picflow.koolearn.com/upload/papers/20140824/20140824023834093602.png的值为(  )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824023834108327.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824023834124385.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824023834124369.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824023834139382.png

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  • 5已知函数y=f(x)的导函数y=f′(x)的图象如图,则(  ) http://picflow.koolearn.com/upload/papers/20140824/201408240525572973927.jpg

    A.函数f(x)有1个极大值点,1个极小值点

    B.函数f(x)有2个极大值点,2个极小值点

    C.函数f(x)有3个极大值点,1个极小值点

    D.函数f(x)有1个极大值点,3个极小值点

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  • 6函数 http://picflow.koolearn.com/upload/papers/20140824/20140824034055946857.png的大致图象如图所示,则 http://picflow.koolearn.com/upload/papers/20140824/20140824034055962481.png等于(  ) http://picflow.koolearn.com/upload/papers/20140824/201408240340559777283.png

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824034055993409.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824034056009404.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824034056024430.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824034056040496.png

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  • 7若函数 http://picflow.koolearn.com/upload/papers/20140824/20140824045051043736.png在(0,1)内有极小值,则实数a的取值范围是(   )

    A.(0,3)

    B.(-∞,3)

    C.(0,+∞)

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824045051074658.png

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  • 8.可导函数在闭区间的最大值必在(     )取得

    A.极值点

    B.导数为0的点

    C.极值点或区间端点

    D.区间端点

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  • 9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

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  • 10已知函数 http://picflow.koolearn.com/upload/papers/20140824/201408240414533571021.png,若同时满足条件: ① http://picflow.koolearn.com/upload/papers/20140824/20140824041453372733.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824041453388321.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824041453403491.png的一个极大值点; ② http://picflow.koolearn.com/upload/papers/20140824/20140824041453419319.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824041453481332.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824041453497587.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824041453513584.png.则实数 http://picflow.koolearn.com/upload/papers/20140824/20140824041453528283.png的取值范围是(    )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824041453544478.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824041453559536.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824041453575815.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824041453606815.png

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