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已知点 http://picflow.koolearn.com/upload/papers/20140823/20140823215805969399.png在曲线 http://picflow.koolearn.com/upload/papers/20140823/20140823215805984701.png上,点 http://picflow.koolearn.com/upload/papers/20140823/20140823215806047357.png在不等式组 http://picflow.koolearn.com/upload/papers/20140823/201408232158062491148.png所表示的平面区域内,那么 http://picflow.koolearn.com/upload/papers/20140823/20140823215806265544.png的最小值是(     )

发布时间:2021-07-19

A.http://picflow.koolearn.com/upload/papers/20140823/20140823215806281206.png

B.http://picflow.koolearn.com/upload/papers/20140823/20140823215806312291.png

C.http://picflow.koolearn.com/upload/papers/20140823/20140823215806343533.png

D.http://picflow.koolearn.com/upload/papers/20140823/20140823215806359585.png

试卷相关题目

  • 1已知实数 http://picflow.koolearn.com/upload/papers/20140823/20140823220153277420.png满足 http://picflow.koolearn.com/upload/papers/20140823/201408232201533081103.png,若目标函数 http://picflow.koolearn.com/upload/papers/20140823/20140823220153323551.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823220153339527.png取得最小值时最优解有无数个,则实数 http://picflow.koolearn.com/upload/papers/20140823/20140823220153464289.png的值为(   )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823220153479225.png 

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823220153511348.png 

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823220153526327.png

    D.1

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  • 2http://picflow.koolearn.com/upload/papers/20140823/20140823213640214266.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823213640230310.png满足 http://picflow.koolearn.com/upload/papers/20140823/201408232136402461284.png,则 http://picflow.koolearn.com/upload/papers/20140823/20140823213640261548.png的最大值为 (    )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823213640277291.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823213640308306.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823213640324254.png

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823213640339290.png

    开始考试点击查看答案
  • 3在平面直角坐标系中,若不等式组 http://picflow.koolearn.com/upload/papers/20140823/201408232108339291132.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823210833945310.png为常数)所表示的平面区域内的面积等于2,则 http://picflow.koolearn.com/upload/papers/20140823/20140823210833992283.png的值为(  )

    A.-5

    B.1

    C.2

    D.3

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  • 4已知实数x,y满足 http://picflow.koolearn.com/upload/papers/20140823/201408232112524062297.png则z=|x+4y|的最大值为  (     )

    A.9

    B.17

    C.5

    D.15

    开始考试点击查看答案
  • 5http://picflow.koolearn.com/upload/papers/20140823/20140823213059993403.png满足约束条件 http://picflow.koolearn.com/upload/papers/20140823/201408232131000091203.png,若目标函数 http://picflow.koolearn.com/upload/papers/20140823/20140823213100025636.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823213100040526.png)的最大值为 http://picflow.koolearn.com/upload/papers/20140823/20140823213100056326.png,则 http://picflow.koolearn.com/upload/papers/20140823/20140823213100071572.png的最小值为(  )        

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823213100087464.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823213100103406.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823213100118360.png

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823213100134248.png

    开始考试点击查看答案
  • 6某家电企业要将刚刚生产的100台变频空调送往南昌,现有4辆甲型货车和8辆乙型货车调配。每辆甲型货车的运输费用是400元,可装空调20台,每辆乙型货车的运输费用是300元,可装空调10台,若每辆车至多运一次,则企业所花的最少运费为

    A.2000元

    B.2200元

    C.2400元

    D.2800元

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  • 7在不等式组 http://picflow.koolearn.com/upload/papers/20140823/201408232010320501009.png表示的平面区域内,目标函数 http://picflow.koolearn.com/upload/papers/20140823/20140823201032066502.png的最大值是(  )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823201032081378.png

    B.2  

    C.1

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823201032097362.png

    开始考试点击查看答案
  • 8设x,y满足约束条件 http://picflow.koolearn.com/upload/papers/20140823/201408232038026111263.png若目标函数 http://picflow.koolearn.com/upload/papers/20140823/20140823203802627604.png(a>0,b>0)的最大值为12,则 http://picflow.koolearn.com/upload/papers/20140823/20140823203802642557.png的最小值为

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823203802673382.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823203802689470.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823203802705342.png

    D.4

    开始考试点击查看答案
  • 9图中阴影部分可用二元一次不等式组表示 http://picflow.koolearn.com/upload/papers/20140823/201408232014481568652.png

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823201448171908.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823201448187904.png

    C.http://picflow.koolearn.com/upload/papers/20140823/201408232014482181121.png

    D.http://picflow.koolearn.com/upload/papers/20140823/201408232014482341088.png

    开始考试点击查看答案
  • 10设变量 http://picflow.koolearn.com/upload/papers/20140823/20140823202537507403.png满足约束条件 http://picflow.koolearn.com/upload/papers/20140823/20140823202537522992.png,则 http://picflow.koolearn.com/upload/papers/20140823/20140823202537538545.png的最大值为

    A.10

    B.8

    C.6

    D.4

    开始考试点击查看答案
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