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解题方法
1 . 求适合下列条件的椭圆的标准方程:
(1)两个焦点的坐标分别是
,椭圆上一点P到两焦点距离的和是10;
(2)焦点在y轴上,且经过两个点
和
;
(3)经过
和点
.
(1)两个焦点的坐标分别是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32913a9e8f6ad754d6434c0549ba4fde.png)
(2)焦点在y轴上,且经过两个点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b094cba781181aeb90752170e9ba6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
(3)经过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd2419c1641f1a7dc043a0a264ac483.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b8bbc1781630588ea1f58f693b8893b.png)
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