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双曲线-=1(mn≠0)的离心率为2,有一个焦点与抛物线y2=4x的焦点重合,则...
双曲线
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=1(mn≠0)的离心率为2,有一个焦点与抛物线y
2=4x的焦点重合,则mn的值为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024190840168111150/SYS201310241908401681111008_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024190840168111150/SYS201310241908401681111008_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024190840168111150/SYS201310241908401681111008_ST/4.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024190840168111150/SYS201310241908401681111008_ST/5.png)
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