设
是椭圆
上的动点,则
到该椭圆的两个焦点的距离之和为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
更新时间:2024-04-01 17:20:49
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【知识点】 椭圆定义及辨析
相似题推荐
填空题-单空题
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容易
(0.94)
【推荐1】已知椭圆
的左、右焦点分别为F1,F2,点
是椭圆上一点,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c91db7df533e6918177c722961da666e.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4754fbe523ca63eba3810a3f88f37df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3cc627245678ea3f29def77aa1fcb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c91db7df533e6918177c722961da666e.png)
您最近一年使用:0次
填空题-单空题
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容易
(0.94)
解题方法
【推荐2】已知椭圆
的两个焦点分别为
,点
为椭圆
上一点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afed5a6803b6bab387a947a50ec92394.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/916713f2e5437d159769b845045dd97b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afed5a6803b6bab387a947a50ec92394.png)
您最近一年使用:0次