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已知a=4,b=1,焦点在x轴上的椭圆方程是( ) A. B. C.+y2=1 ...
已知a=4,b=1,焦点在x轴上的椭圆方程是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101936720448828/SYS201311031019367204488007_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101936720448828/SYS201311031019367204488007_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101936720448828/SYS201311031019367204488007_ST/2.png)
+y
2=1
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101936720448828/SYS201311031019367204488007_ST/3.png)
考点分析:
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