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已知F1,F2分别是双曲线-=1(a>b>0)的两个焦点,A和B是以O(O为坐标...
已知F
1,F
2分别是双曲线
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344468841989/SYS201311031023444688419011_ST/0.png)
-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344468841989/SYS201311031023444688419011_ST/1.png)
=1(a>b>0)的两个焦点,A和B是以O(O为坐标原点)为圆心,|OF
1|为半径的圆与该双曲线左支的两个交点,且△F
2AB是等边三角形,则双曲线的离心率为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344468841989/SYS201311031023444688419011_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344468841989/SYS201311031023444688419011_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344468841989/SYS201311031023444688419011_ST/4.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344468841989/SYS201311031023444688419011_ST/5.png)
+1
考点分析:
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