定义运算
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100932045562494/SYS201311031009320455624011_ST/0.png)
,复数z满足
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100932045562494/SYS201311031009320455624011_ST/1.png)
,则复数z的模为
.
考点分析:
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已知O为平面上的一个定点,A、B、C是该平面上不共线的三个动点,点P满足条件
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100932045562494/SYS201311031009320455624009_ST/0.png)
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B.垂心
C.外心
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设集合A={(x,y)||x|+|y|≤1},B={(x,y)|(y-x)(y+x)≤0},M=A∩B,若动点P(x,y)∈M,则x
2+(y-1)
2的取值范围是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100932045562494/SYS201311031009320455624008_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100932045562494/SYS201311031009320455624008_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100932045562494/SYS201311031009320455624008_ST/2.png)
D.
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给出下列的四个式子:①
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100932045562494/SYS201311031009320455624007_ST/0.png)
,②
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100932045562494/SYS201311031009320455624007_ST/1.png)
,③
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100932045562494/SYS201311031009320455624007_ST/2.png)
,④
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100932045562494/SYS201311031009320455624007_ST/3.png)
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C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100932045562494/SYS201311031009320455624007_ST/4.png)
D.
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设函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100932045562494/SYS201311031009320455624006_ST/0.png)
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B.1
C.2
D.3
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