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已知不等式组 http://picflow.koolearn.com/upload/papers/20140823/20140823141102360821.gif所表示的平面区域的面积为4,则 http://picflow.koolearn.com/upload/papers/20140823/20140823141102360193.gif的值为

发布时间:2021-07-16

A.1

B.http://picflow.koolearn.com/upload/papers/20140823/20140823141102376195.gif

C.1http://picflow.koolearn.com/upload/papers/20140823/2014082314110240772.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823141102376195.gif

D.3

试卷相关题目

  • 1设变量 http://picflow.koolearn.com/upload/papers/20140823/20140823142248651329.gif满足约束条件 http://picflow.koolearn.com/upload/papers/20140823/20140823142248667919.gif,则目标函数 http://picflow.koolearn.com/upload/papers/20140823/20140823142248683423.gif的最大值 http://picflow.koolearn.com/upload/papers/20140823/20140823142248714327.gif与最小值 http://picflow.koolearn.com/upload/papers/20140823/20140823142248729211.gif的比 http://picflow.koolearn.com/upload/papers/20140823/20140823142248729369.gif=(   )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823142248745285.gif

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823142248776313.gif

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823142248792214.gif

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823142248792257.gif

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  • 2下面四个点中,位于 http://picflow.koolearn.com/upload/papers/20140823/20140823142529113643.gif表示的平面区域内的点是(   )

    A.(0,2)

    B.(-2,0)

    C.(0,-2)

    D.(2,0)

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  • 3若变量 http://picflow.koolearn.com/upload/papers/20140823/20140823143656684329.gif满足约束条件 http://picflow.koolearn.com/upload/papers/20140823/20140823143656716795.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823143656731383.gif的最大值为

    A.4

    B.3

    C.2

    D.1

    开始考试点击查看答案
  • 4某加工厂用某原料由车间加工出 http://picflow.koolearn.com/upload/papers/20140823/20140823143336708200.gif产品,由乙车间加工出 http://picflow.koolearn.com/upload/papers/20140823/20140823143336723206.gif产品.甲车间加工一箱原料需耗费工时10小时可加工出7千克 http://picflow.koolearn.com/upload/papers/20140823/20140823143336708200.gif产品,每千克 http://picflow.koolearn.com/upload/papers/20140823/20140823143336708200.gif产品获利40元.乙车间加工一箱原料需耗费工时6小时可加工出4千克 http://picflow.koolearn.com/upload/papers/20140823/20140823143336723206.gif产品,每千克 http://picflow.koolearn.com/upload/papers/20140823/20140823143336723206.gif产品获利50元.甲、乙两车间每天功能完成至多70多箱原料的加工,每天甲、乙车间耗费工时总和不得超过480小时,甲、乙两车间每天获利最大的生产计划为 http://picflow.koolearn.com/upload/papers/20140823/20140823143336817398.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823143336817401.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823143336817401.gif

    A.甲车间加工原料10箱,乙车间加工原料60箱

    B.甲车间加工原料15箱,乙车间加工原料55箱

    C.甲车间加工原料18箱,乙车间加工原料50箱

    D.甲车间加工原料40箱,乙车间加工原料30箱 http://picflow.koolearn.com/upload/papers/20140823/201408231433368643351.gif

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  • 5在不等式2x+y-6<0表示的平面区域内的点是(   )

    A.(0,1)

    B.(5,0)

    C.(0,7)

    D.(2,3)

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  • 6在坐标平面上,不等式组 http://picflow.koolearn.com/upload/papers/20140823/20140823164202887900.png所表示的平面区域的面积为( )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823164203074309.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823164203168349.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823164203184443.png

    D.2

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  • 7已知不等式组 http://picflow.koolearn.com/upload/papers/20140823/20140823163418209726.gif表示平面区域D,现在往抛物线 http://picflow.koolearn.com/upload/papers/20140823/20140823163418225449.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823163418240187.gif轴围成的封闭区域内随机地抛掷一粒小颗粒,则该颗粒落到区域D中的概率( )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823163418256235.gif

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823163418272254.gif

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823163418303217.gif

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823163418318234.gif

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  • 8不等式组 http://picflow.koolearn.com/upload/papers/20140823/201408231647552761641.png表示的平面区域为D,区域D关于直线 http://picflow.koolearn.com/upload/papers/20140823/20140823164755292584.png的对称区域为E,则区域D和E中距离最近的两点间距离为  (   )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823164755307561.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823164755323538.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823164755339553.png

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823164755354714.png

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  • 9在平面直角坐标系中,不等式组 http://picflow.koolearn.com/upload/papers/20140823/20140823162807989778.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823162808005192.gif为常数)表示的平面区域的面积是9,那么实数 http://picflow.koolearn.com/upload/papers/20140823/20140823162808005192.gif的值为(     )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823162808036299.gif

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823162808067307.gif

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823162808083145.gif

    D.1

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  • 10若实数 http://picflow.koolearn.com/upload/papers/20140823/20140823155412186187.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823155412201193.gif满足不等式组 http://picflow.koolearn.com/upload/papers/20140823/20140823155412264973.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823155412295342.gif的最大值为9,则实数 http://picflow.koolearn.com/upload/papers/20140823/20140823155412311220.gif( )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823155412326202.gif

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823155412357145.gif

    C.1

    D.2

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