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设x,y满足约束条件http://picflow.koolearn.com/upload/papers/g02/20110603/201106031357038571219.gif,则(x+1)2+y2的最大值为

发布时间:2021-07-16

A.80    

B.http://picflow.koolearn.com/upload/papers/g02/20110603/20110603135703873906.gif   

C.25  

D.http://picflow.koolearn.com/upload/papers/g02/20110603/20110603135703904903.gif

试卷相关题目

  • 1若实数x,y满足http://picflow.koolearn.com/upload/papers/g02/20110613/201106131439381711159.gif,则x+y的最小值是

    A.4

    B.3

    C.2

    D.1

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  • 2已知D是不等式组http://picflow.koolearn.com/upload/papers/g02/20110523/201105231458356941369.gif所确定的平面区域,则圆x2+y2=4在区域D内的弧长为

    A.http://picflow.koolearn.com/upload/papers/g02/20110523/20110523145835709939.gif

    B.http://picflow.koolearn.com/upload/papers/g02/20110523/20110523145835725944.gif

    C.http://picflow.koolearn.com/upload/papers/g02/20110523/20110523145835756988.gif

    D.http://picflow.koolearn.com/upload/papers/g02/20110523/20110523145835787991.gif

    开始考试点击查看答案
  • 3已知点(3,1)和(-4,6)在直线3x-2y+a=0的两侧,那么实数a的取值范围是

    A.a<-7或a>24

    B.-7<a<24

    C.a=-7或a=24

    D.以上都不对

    开始考试点击查看答案
  • 4若点P(x0,y0)和点A(1,2)在直线l:3x+2y-8=0的异侧,则

    A.3x0+2y0>0

    B.3x0+2y0<0

    C.3x0+2y0>8

    D.3x0+2y0<8

    开始考试点击查看答案
  • 5不等式2x+y-6>0表示的平面区域在直线2x+y-6=0的

    A.左上方

    B.右上方

    C.左下方

    D.右下方

    开始考试点击查看答案
  • 6若x,y满足约束http://picflow.koolearn.com/upload/papers/g02/20110519/201105190921193501579.gif,则z=2x+y的最小值是

    A.-1

    C.2

    D.8

    开始考试点击查看答案
  • 7已知圆面C:(x-a)2+y2≤a2-1的面积为S,平面区域D:2x+y≤4与圆面C的公共区域的面积大于http://picflow.koolearn.com/upload/papers/g02/20110613/20110613105419484879.gifS,则实数a的取值范围是

    A.(-∞,2 )

    B.(-∞,2]

    C.(-∞,-1)∪(1,2)

    D.(-∞,-1)∪(1,2]

    开始考试点击查看答案
  • 8已知平行四边形ABCD的三个顶点为A(-1,2),B(3,4),C(4,-2),点(x,y)在平行四边形ABCD的内部,则z=2x-5y的取值范围是

    A.(-14,16)

    B.(-14,20)

    C.(-12,18)

    D.(-12,20)

    开始考试点击查看答案
  • 9设不等式组http://picflow.koolearn.com/upload/papers/g02/20110713/201107131343395461544.gif所表示的区域为A,现在区域A中任意丢进一个粒子,则该粒子落在直线y=http://picflow.koolearn.com/upload/papers/g02/20110713/20110713134339546879.gifx下方的概率为

    A.http://picflow.koolearn.com/upload/papers/g02/20110713/20110713134339562873.gif

    B.http://picflow.koolearn.com/upload/papers/g02/20110713/20110713134339562880.gif

    C.http://picflow.koolearn.com/upload/papers/g02/20110713/20110713134339578879.gif

    D.http://picflow.koolearn.com/upload/papers/g02/20110713/20110713134339578882.gif

    开始考试点击查看答案
  • 10已知实数x,y满足http://picflow.koolearn.com/upload/papers/g02/20110521/201105211559387561581.gif(x∈Z,y∈Z),每一对整数(x,y)对应平面上一个点,经过其中任意两点作直线,则不同直线的条数是

    A.14

    B.19

    C.36

    D.72

    开始考试点击查看答案
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