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已知双曲线的一条渐近线方程为y=,则此双曲线的离心率为( ) A. B. C. ...
已知双曲线
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101039503353079/SYS201311031010395033530002_ST/0.png)
的一条渐近线方程为y=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101039503353079/SYS201311031010395033530002_ST/1.png)
,则此双曲线的离心率为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101039503353079/SYS201311031010395033530002_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101039503353079/SYS201311031010395033530002_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101039503353079/SYS201311031010395033530002_ST/4.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101039503353079/SYS201311031010395033530002_ST/5.png)
考点分析:
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