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在平面直角坐标系中,不等式组 http://picflow.koolearn.com/upload/papers/20140824/201408240455351351061.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824045535151283.png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/20140824/20140824045535151283.png的值为(  )

发布时间:2021-07-19

A.http://picflow.koolearn.com/upload/papers/20140824/20140824045535167468.png

B.http://picflow.koolearn.com/upload/papers/20140824/20140824045535198483.png

C.http://picflow.koolearn.com/upload/papers/20140824/20140824045535213271.png

D.http://picflow.koolearn.com/upload/papers/20140824/20140824045535229206.png http://picflow.koolearn.com/upload/papers/20140824/201408240455352454000.png

试卷相关题目

  • 1已知函数 http://picflow.koolearn.com/upload/papers/20140824/20140824050339594447.png的定义域为—2, http://picflow.koolearn.com/upload/papers/20140824/20140824050339610409.png,部分对应值如下表, http://picflow.koolearn.com/upload/papers/20140824/20140824050339641465.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824050339594447.png的导函数,函数 http://picflow.koolearn.com/upload/papers/20140824/20140824050339672578.png的图象如右图所示: http://picflow.koolearn.com/upload/papers/20140824/201408240503396881250.png     http://picflow.koolearn.com/upload/papers/20140824/201408240503397191336.png 若两正数 http://picflow.koolearn.com/upload/papers/20140824/20140824050339735396.png满足 http://picflow.koolearn.com/upload/papers/20140824/20140824050339750668.png,则 http://picflow.koolearn.com/upload/papers/20140824/20140824050339766538.png的取值范围是(     )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824050339797630.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824050339813593.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824050339813621.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824050339844543.png

    开始考试点击查看答案
  • 2由不等式组 http://picflow.koolearn.com/upload/papers/20140824/20140824044453210957.png围成的三角形区域内有一个内切圆,向该区域内随机投一个点,该点落在圆内的概率是关于t的函数P(t),则(    )

    A.P′(t)>0

    B.P′(t)<0

    C.P′(t)=0

    D.P′(t)符号不确定

    开始考试点击查看答案
  • 3若变量 http://picflow.koolearn.com/upload/papers/20140824/20140824043616802403.png满足约束条件 http://picflow.koolearn.com/upload/papers/20140824/201408240436168181300.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824043616833515.png的最大值为 http://picflow.koolearn.com/upload/papers/20140824/20140824043616849283.png,最小值为 http://picflow.koolearn.com/upload/papers/20140824/20140824043616849299.png,则 http://picflow.koolearn.com/upload/papers/20140824/20140824043616865390.png的值是(   )

    A.16

    B.24

    C.30

    D.48

    开始考试点击查看答案
  • 4若实数 http://picflow.koolearn.com/upload/papers/20140824/20140824044538122451.png满足 http://picflow.koolearn.com/upload/papers/20140824/201408240445381381390.png,则 http://picflow.koolearn.com/upload/papers/20140824/20140824044538216606.png的值域是(  )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824044538216460.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824044538247419.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824044538263498.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824044538278466.png

    开始考试点击查看答案
  • 5已知实数 http://picflow.koolearn.com/upload/papers/20140824/20140824044815917403.png满足: http://picflow.koolearn.com/upload/papers/20140824/201408240448159481032.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824044815963640.png,则 http://picflow.koolearn.com/upload/papers/20140824/20140824044815979231.png的取值范围是(    )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824044816010476.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824044816026407.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824044816041461.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824044816073509.png

    开始考试点击查看答案
  • 6已知不等式组 http://picflow.koolearn.com/upload/papers/20140824/201408240450163331169.png 表示的平面区域的面积等于 http://picflow.koolearn.com/upload/papers/20140824/20140824045016349266.png,则 http://picflow.koolearn.com/upload/papers/20140824/20140824045016364283.png的值为(   )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824045016380223.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824045016396368.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824045016411291.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824045016427338.png

    开始考试点击查看答案
  • 7已知O是坐标原点,点A(-1,1),若点M(x,y)为平面区域 http://picflow.koolearn.com/upload/papers/20140824/20140824045801620931.png,上的一个动点,则 http://picflow.koolearn.com/upload/papers/20140824/20140824045801635394.png· http://picflow.koolearn.com/upload/papers/20140824/20140824045801651483.png的取值范围是(  )

    A.[-1,0]

    B.[0,1]

    C.[0,2]

    D.[-1,2]

    开始考试点击查看答案
  • 8若实数 http://picflow.koolearn.com/upload/papers/20140824/20140824043018173430.png满足 http://picflow.koolearn.com/upload/papers/20140824/20140824043018189755.png,且使关于 http://picflow.koolearn.com/upload/papers/20140824/20140824043018204278.png的方程 http://picflow.koolearn.com/upload/papers/20140824/20140824043018220734.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824043018235737.png均有实数根,则 http://picflow.koolearn.com/upload/papers/20140824/20140824043018235527.png有(  )

    A.最小值2

    B.最小值3

    C.最大值http://picflow.koolearn.com/upload/papers/20140824/20140824043018251450.png

    D.最大值http://picflow.koolearn.com/upload/papers/20140824/20140824043018267460.png

    开始考试点击查看答案
  • 9已知点 http://picflow.koolearn.com/upload/papers/20140824/20140824051529317745.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824051529349722.png的坐标满足不等式组 http://picflow.koolearn.com/upload/papers/20140824/201408240515293801310.png,若 http://picflow.koolearn.com/upload/papers/20140824/20140824051529395534.png,则 http://picflow.koolearn.com/upload/papers/20140824/20140824051529427599.png的 取值范围是(    )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824051529442398.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824051529458383.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824051529489399.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824051529551366.png

    开始考试点击查看答案
  • 10(3分)(2011?重庆)设m,k为整数,方程mx 2﹣kx+2=0在区间(0,1)内有两个不同的根,则m+k的最小值为(        )

    A.﹣8

    B.8

    C.12

    D.13

    开始考试点击查看答案
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