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已知椭圆C:+y2=1及定点A(2,0),点P是椭圆上的动点,则|PA|的最小值...
已知椭圆C:
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102739135980969/SYS201311031027391359809008_ST/0.png)
+y
2=1及定点A(2,0),点P是椭圆上的动点,则|PA|的最小值为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102739135980969/SYS201311031027391359809008_ST/1.png)
B.1
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102739135980969/SYS201311031027391359809008_ST/2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102739135980969/SYS201311031027391359809008_ST/3.png)
考点分析:
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102739135980969/SYS201311031027391359809007_ST/12.png)
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