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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(    )

发布时间:2021-07-19

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

B.1

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

D.2

试卷相关题目

  • 1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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  • 2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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  • 3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(    )

    A.18

    B.16

    C.14

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

    开始考试点击查看答案
  • 4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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  • 5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

    开始考试点击查看答案
  • 6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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  • 7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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  • 8设变量x、y满足 http://picflow.koolearn.com/upload/papers/20140824/201408240456342441131.png则目标函数z=2x+y的最小值为(    )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824045634275388.png

    B.2

    C.4

    D.6

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  • 9若变量x,y满足约束条件 http://picflow.koolearn.com/upload/papers/20140824/20140824050051020956.png,则z=2x+y的最大值和最小值分别为(  )

    A.4和3

    B.4和2

    C.3和2

    D.2和0

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  • 10已知变量x,y满足约束条件 http://picflow.koolearn.com/upload/papers/20140824/20140824050238364951.png,则z=x+2y的最小值为

    A.3

    B.1

    C.-5

    D.-6

    开始考试点击查看答案
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