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若不等式组 http://picflow.koolearn.com/upload/papers/20140823/201408232052003641956.jpg表示的平面区三角形,则实数K的取值范围是

发布时间:2021-07-19

A.http://picflow.koolearn.com/upload/papers/20140823/20140823205200379983.jpg

B.http://picflow.koolearn.com/upload/papers/20140823/201408232052003951167.jpg

C.http://picflow.koolearn.com/upload/papers/20140823/201408232052004101416.jpg

D.http://picflow.koolearn.com/upload/papers/20140823/201408232052004421561.jpg

试卷相关题目

  • 1http://picflow.koolearn.com/upload/papers/20140823/20140823203256367271.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823203256382313.png满足不等式组 http://picflow.koolearn.com/upload/papers/20140823/201408232032566011030.png,则 http://picflow.koolearn.com/upload/papers/20140823/20140823203256616605.png的最大值是 ( )

    A.1

    B.2

    C.8

    D.16

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  • 2设实数x,y满足 http://picflow.koolearn.com/upload/papers/20140823/20140823211325478572.png,则点 http://picflow.koolearn.com/upload/papers/20140823/20140823211325572499.png不在区域 http://picflow.koolearn.com/upload/papers/20140823/20140823211325587860.png内的概率是(   )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823211325603303.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823211325619484.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823211325634422.png

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823211325665352.png

    开始考试点击查看答案
  • 3若实数 http://picflow.koolearn.com/upload/papers/20140823/20140823212201558403.png满足 http://picflow.koolearn.com/upload/papers/20140823/201408232122016051019.png  ,则 http://picflow.koolearn.com/upload/papers/20140823/20140823212201621510.png的最小值是( )

    A.-1

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823212201652363.png

    C.1

    D.2

    开始考试点击查看答案
  • 4设实数 http://picflow.koolearn.com/upload/papers/20140823/20140823211827089266.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823211827105310.png满足约束条件 http://picflow.koolearn.com/upload/papers/20140823/201408232118271201016.png,则 http://picflow.koolearn.com/upload/papers/20140823/20140823211827136603.png的最小值为(   )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823211827152373.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823211827276353.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823211827292328.png

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823211827308290.png

    开始考试点击查看答案
  • 5动点 http://picflow.koolearn.com/upload/papers/20140823/20140823213700791577.png满足的区域为: http://picflow.koolearn.com/upload/papers/20140823/201408232137008061206.png,若幂函数 http://picflow.koolearn.com/upload/papers/20140823/20140823213700822709.png为常数)的图像与动点 http://picflow.koolearn.com/upload/papers/20140823/20140823213700838296.png所在的区域有公共点,则 http://picflow.koolearn.com/upload/papers/20140823/20140823213700853319.png的取值范围是(  )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823213700869701.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823213701009693.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823213701025702.png

    D.http://picflow.koolearn.com/upload/papers/20140823/201408232137010401010.png

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  • 6在平面直角坐标系中,若不等式组 http://picflow.koolearn.com/upload/papers/20140823/201408232047303581157.png( http://picflow.koolearn.com/upload/papers/20140823/20140823204730374287.png为常数)所表示的平面区域的面积等于2,则 http://picflow.koolearn.com/upload/papers/20140823/20140823204730374287.png的值为(  )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823204730561276.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823204730561212.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823204730592297.png

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823204730592294.png

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  • 7某加工厂用某原料由甲车间加工出A产品,由乙车间加工出B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A产品,每千克A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B产品,每千克B产品获利50元.甲、乙两车间每天共能完成至多70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、乙两车间每天总获利最大的生产计划为 (      )

    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

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  • 8已知点集 http://picflow.koolearn.com/upload/papers/20140823/201408232108539131329.pnghttp://picflow.koolearn.com/upload/papers/20140823/201408232108539291407.png,点集 http://picflow.koolearn.com/upload/papers/20140823/20140823210853944298.png所表示的平面区域与点集 http://picflow.koolearn.com/upload/papers/20140823/20140823210853960292.png所表示的平面区域的边界的交点为 http://picflow.koolearn.com/upload/papers/20140823/20140823210853975550.png.若点 http://picflow.koolearn.com/upload/papers/20140823/20140823210853991600.png在点集 http://picflow.koolearn.com/upload/papers/20140823/20140823210853944298.png所表示的平面区域内(不在边界上),则△ http://picflow.koolearn.com/upload/papers/20140823/20140823210854038565.png的面积的最大值是

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823210854053205.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823210854069291.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823210854085379.png

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823210854100248.png

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  • 9若实数x,y满足 http://picflow.koolearn.com/upload/papers/20140823/201408232117452191261.jpg,则 http://picflow.koolearn.com/upload/papers/20140823/20140823211745234817.jpg的最小值为      

    A.O

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823211745266469.jpg

    C.2

    D.4

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  • 10设实数 http://picflow.koolearn.com/upload/papers/20140823/20140823213956229403.png满足 http://picflow.koolearn.com/upload/papers/20140823/201408232139562441170.png  ,则 http://picflow.koolearn.com/upload/papers/20140823/20140823213956275603.png的最大值( )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823213956369324.png

    B.2

    C.3

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823213956385375.png

    开始考试点击查看答案
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