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设F1、F2分别是双曲线x2-=1的左、右焦点.若点P在双曲线上,且•=0,则|...
设F
1、F
2分别是双曲线x
2-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702400190/SYS201310232121217024001011_ST/0.png)
=1的左、右焦点.若点P在双曲线上,且
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702400190/SYS201310232121217024001011_ST/1.png)
•
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702400190/SYS201310232121217024001011_ST/2.png)
=0,则|
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702400190/SYS201310232121217024001011_ST/3.png)
+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702400190/SYS201310232121217024001011_ST/4.png)
|=( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702400190/SYS201310232121217024001011_ST/5.png)
B.2
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702400190/SYS201310232121217024001011_ST/6.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702400190/SYS201310232121217024001011_ST/7.png)
D.2
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702400190/SYS201310232121217024001011_ST/8.png)
考点分析:
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