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http://picflow.koolearn.com/upload/papers/20140824/20140824050425302403.png均为区间 http://picflow.koolearn.com/upload/papers/20140824/20140824050425318429.png的随机数,则 http://picflow.koolearn.com/upload/papers/20140824/20140824050425349562.png的概率为(  )

发布时间:2021-07-19

A.http://picflow.koolearn.com/upload/papers/20140824/20140824050425365352.png

B.http://picflow.koolearn.com/upload/papers/20140824/20140824050425380303.png

C.http://picflow.koolearn.com/upload/papers/20140824/20140824050425396338.png

D.http://picflow.koolearn.com/upload/papers/20140824/20140824050425427385.png http://picflow.koolearn.com/upload/papers/20140824/201408240504254582445.png

试卷相关题目

  • 1设变量x,y满足约束条件 http://picflow.koolearn.com/upload/papers/20140824/201408240500473231106.png,则目标函数z=2x+3y+1的最大值为(  )

    A.11

    B.10

    C.9

    D.8.5

    开始考试点击查看答案
  • 2设变量x,y满足约束条件: http://picflow.koolearn.com/upload/papers/20140824/201408240456203131099.png,则z=x﹣3y的最小值(  )

    A.﹣2

    B.﹣4

    C.﹣6

    D.﹣8

    开始考试点击查看答案
  • 3http://picflow.koolearn.com/upload/papers/20140824/20140824045300633390.png满足不等式组 http://picflow.koolearn.com/upload/papers/20140824/201408240453006481223.png,若 http://picflow.koolearn.com/upload/papers/20140824/20140824045300664580.png的最大值为 http://picflow.koolearn.com/upload/papers/20140824/20140824045300679463.png,最小值为 http://picflow.koolearn.com/upload/papers/20140824/20140824045300695397.png,则实数 http://picflow.koolearn.com/upload/papers/20140824/20140824045300726283.png的取值范围是(    )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824045300742558.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824045300742395.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824045300773526.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824045300789452.png

    开始考试点击查看答案
  • 4在平面直角坐标系中,O是坐标原点,两定点A,B满足 http://picflow.koolearn.com/upload/papers/20140824/20140824044451619765.png,则点集 http://picflow.koolearn.com/upload/papers/20140824/20140824044451634949.png,|λ|+|μ|≤1,λ,μ∈R}所表示的区域的面积是(  )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824044451650421.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824044451665419.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824044451681412.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824044451697405.png

    开始考试点击查看答案
  • 5设变量x,y满足约束条件 http://picflow.koolearn.com/upload/papers/20140824/201408240431280921270.png,则 http://picflow.koolearn.com/upload/papers/20140824/20140824043128108610.png的最大值是(  )

    A.7

    B.8

    C.9

    D.10

    开始考试点击查看答案
  • 6原点和点(2,﹣1)在直线x+y﹣a=0的两侧,则实数a的取值范围是(  )

    A.0≤a≤1

    B.0<a<1

    C.a=0或a=1

    D.a<0或a>1

    开始考试点击查看答案
  • 7http://picflow.koolearn.com/upload/papers/20140824/20140824043440456457.png”是“关于 http://picflow.koolearn.com/upload/papers/20140824/20140824043440472266.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824043440503310.png的不等式组 http://picflow.koolearn.com/upload/papers/20140824/201408240434405191347.png表示的平面区域为三角形”的(  )

    A.充分不必要条件

    B.必要不充分条件

    C.充要条件

    D.既不充分也不必要条件

    开始考试点击查看答案
  • 8http://picflow.koolearn.com/upload/papers/20140824/20140824051253879944.png,则目标函数 http://picflow.koolearn.com/upload/papers/20140824/20140824051253879619.png的取值范围是(   )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824051253894423.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824051253910379.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824051253926507.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824051253941447.png

    开始考试点击查看答案
  • 9下列选项中与点(1,2)位于直线2x﹣y+1=0的同一侧的是(  )

    A.(﹣1,1)

    B.(0,1)

    C.(﹣1,0)

    D.(1,0)

    开始考试点击查看答案
  • 10(2013·随州模拟)变量x,y满足约束条件 http://picflow.koolearn.com/upload/papers/20140824/20140824050828226966.png则目标函数z=3|x|+|y-3|的取值范围是(  )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824050828242446.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824050828257440.png

    C.[-2,3]

    D.[1,6]

    开始考试点击查看答案
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