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已知变量 x, y满足约束条件 http://picflow.koolearn.com/upload/papers/20140823/201408232048156611099.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823204815676559.png的最大值为

发布时间:2021-07-19

A.16

B.32

C.4

D.2

试卷相关题目

  • 1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
  • 2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
  • 3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
  • 4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
  • 5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

    开始考试点击查看答案
  • 6设变量 http://picflow.koolearn.com/upload/papers/20140823/20140823210115085403.png满足约束条件: http://picflow.koolearn.com/upload/papers/20140823/201408232101151011360.png的最大值为(   )

    A.10

    B.8

    C.6

    D.4

    开始考试点击查看答案
  • 7若实数x,y满足 http://picflow.koolearn.com/upload/papers/20140823/201408232115008101127.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823211500826638.png的取值范围是(   )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823211500872536.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823211500872558.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823211500888554.png

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823211500904548.png

    开始考试点击查看答案
  • 8已知约束条件 http://picflow.koolearn.com/upload/papers/20140823/201408232228571931382.png若目标函数 http://picflow.koolearn.com/upload/papers/20140823/20140823222857271757.png恰好在点(2,2)处取得最大值,则 http://picflow.koolearn.com/upload/papers/20140823/20140823222857442289.png 的取值范围为( )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823222857458550.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823222857598476.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823222857629459.png

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823222857661563.png

    开始考试点击查看答案
  • 9正数 http://picflow.koolearn.com/upload/papers/20140823/20140823224533910266.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823224533925310.png满足 http://picflow.koolearn.com/upload/papers/20140823/201408232245339561012.png,则 http://picflow.koolearn.com/upload/papers/20140823/20140823224533972724.png的最小值为(   )

    A.1

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823224533988519.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823224534003362.png

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823224534019415.png

    开始考试点击查看答案
  • 10.要将两种大小不同的钢板截成

    B.C三种规格,每张钢板可同时截得三种规格的小钢板块数如下表:A规格B规格C规格第一种钢板211第二种钢板123 今需A.B.C三种规格的成品各15、18、27块,所需两种规格的钢板的张数分别为m、n(m、n为整数),则m+n的最小值为 ( ) A.10 B.11

    C.12

    D.13

    开始考试点击查看答案
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