1 . 椭圆
的焦点
的坐标为_____ ,若
为椭圆上任意一点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a53836c455d2f63d7ad643dcead96e00.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a89c03d164b45b7e9d3426efa62eb33a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48932773034bb6e1651acf140d47822c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a53836c455d2f63d7ad643dcead96e00.png)
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解题方法
2 . 椭圆
上一点P到右焦点F的距离为3,则P到左焦点的距离是______ ,顶点在原点的抛物线C的焦点也为F,则其标准方程为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e78f1a9cc4dedc05c175ab99b288b9f.png)
您最近一年使用:0次