若椭圆上的点到其一个焦点的距离的最小值为
,最大值为
,则该椭圆的短轴长为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
更新时间:2020-10-11 21:44:15
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【知识点】 求椭圆的长轴、短轴
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【推荐1】如图所示,在
中,
,
.以
为焦点的椭圆经过点
,若该椭圆的焦距为
,则其短轴的长为______ .
![](https://img.xkw.com/dksih/QBM/2020/2/28/2408953881124864/2409454011793408/STEM/5ca2cc5f5a8a41d397a9767e1e71e13d.png?resizew=172)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3568f51bde4e391c8f08ff3d55989aef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://img.xkw.com/dksih/QBM/2020/2/28/2408953881124864/2409454011793408/STEM/5ca2cc5f5a8a41d397a9767e1e71e13d.png?resizew=172)
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【推荐2】椭圆
的长轴长为______ ,左顶点的坐标为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca82935f1290b48ef0470713ace330ba.png)
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