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函数 http://picflow.koolearn.com/upload/papers/20140824/20140824045445995882.png,当 http://picflow.koolearn.com/upload/papers/20140824/20140824045446011512.png时, http://picflow.koolearn.com/upload/papers/20140824/20140824045446026590.png恒成立,则 http://picflow.koolearn.com/upload/papers/20140824/20140824045446042605.png的最大值与最小值之和为(    )

发布时间:2021-07-19

A.18

B.16

C.14

D.http://picflow.koolearn.com/upload/papers/20140824/20140824045446058383.png

试卷相关题目

  • 1若变量x,y满足约束条件 http://picflow.koolearn.com/upload/papers/20140824/201408240517532591253.png,则z=5y-x的最大值是(  )

    A.16

    B.30

    C.24

    D.8

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  • 2在平面直角坐标系xOy中,M为不等式组 http://picflow.koolearn.com/upload/papers/20140824/201408240445377481751.png所表示的区域上一动点,则 http://picflow.koolearn.com/upload/papers/20140824/20140824044537764503.png的最小值为(   )

    A.2

    B.1

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824044537779438.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824044537795455.png

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  • 3设x,y满足约束条件 http://picflow.koolearn.com/upload/papers/20140824/201408240444527261046.png,若z= http://picflow.koolearn.com/upload/papers/20140824/20140824044452742643.png的最小值为 http://picflow.koolearn.com/upload/papers/20140824/20140824044452757380.png,则a的值为(   )

    A.1

    B.2

    C.3

    D.4

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  • 4已知实数 http://picflow.koolearn.com/upload/papers/20140824/20140824043736565275.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824043736581309.png满足不等式组 http://picflow.koolearn.com/upload/papers/20140824/20140824043736596997.png,且 http://picflow.koolearn.com/upload/papers/20140824/20140824043736612975.png恒成立,则 http://picflow.koolearn.com/upload/papers/20140824/20140824043736627410.png的取值范围是(   )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824043736643462.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824043736659646.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824043736674501.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824043736690714.png

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  • 5已知实数 http://picflow.koolearn.com/upload/papers/20140824/20140824044023719266.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824044023751310.png满足约束条件 http://picflow.koolearn.com/upload/papers/20140824/201408240440237821183.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824044023797594.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824044023797557.png,设 http://picflow.koolearn.com/upload/papers/20140824/20140824044023922231.png表示向量 http://picflow.koolearn.com/upload/papers/20140824/20140824044023938292.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824044023953307.png方向上的投影,则 http://picflow.koolearn.com/upload/papers/20140824/20140824044023922231.png的取值范围是 (   )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824044023985614.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824044024000401.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824044024016769.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824044024031628.png

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  • 6某工厂分别生产甲、乙两种产品1箱时所需要的煤、电以及获得的纯利润如下表所示.煤(吨)电(千度)纯利润(万元)http://picflow.koolearn.com/upload/papers/20140824/20140824045707144206.png箱甲产品http://picflow.koolearn.com/upload/papers/20140824/20140824045707176287.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824045707144206.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824045707191291.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824045707144206.png箱乙产品http://picflow.koolearn.com/upload/papers/20140824/20140824045707144206.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824045707144206.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824045707144206.png  若生产甲、乙两种产品可使用的煤不超过 http://picflow.koolearn.com/upload/papers/20140824/20140824045707254383.png吨,电不超过 http://picflow.koolearn.com/upload/papers/20140824/20140824045707269350.png千度,则可获得的最大纯利润和是(     )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824045707269350.png万元

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824045707300366.png万元

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824045707316345.png万元

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824045707332318.png万元

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  • 7已知函数 http://picflow.koolearn.com/upload/papers/20140824/20140824050505847738.png在x 1处取得极大值,在x 2处取得极小值,且x 1∈(-1,1),x 2∈(1,2),则2a+b的取值范围是(   )

    A.(-7,2)

    B.(-7,3)

    C.(2,3)

    D.(-1,2)

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  • 8若函数 http://picflow.koolearn.com/upload/papers/20140824/20140824044452196477.png图像上存在点(x,y)满足约束条件 http://picflow.koolearn.com/upload/papers/20140824/201408240444522741128.png,则实数m的最大值为(    )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824044452289338.png

    B.1

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824044452305388.png

    D.2

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  • 9已知 http://picflow.koolearn.com/upload/papers/20140824/20140824043216187400.png满足约束条件 http://picflow.koolearn.com/upload/papers/20140824/201408240432162031008.png,则目标函数 http://picflow.koolearn.com/upload/papers/20140824/20140824043216219591.png的最大值(   )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824043216234291.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824043216250287.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824043216265248.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824043216281259.png

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  • 10设不等式组 http://picflow.koolearn.com/upload/papers/20140824/20140824045431394983.png,表示的平面区域为D,在区域D内随机取一个点,则此点到坐标原点的距离大于2的概率是(  )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824045431409297.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824045431409399.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824045431425306.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824045431440407.png

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