1 . 已知椭圆
的长轴长是短轴长的
倍,且过点
.
![](https://img.xkw.com/dksih/QBM/2018/1/4/1853043816693760/1854409555615744/STEM/ddb0cf7ff6a04f7f84153aff2611e1ea.png?resizew=241)
(1)求椭圆的标准方程;
(2)若
的顶点
、
在椭圆上,
所在的直线斜率为
,
所在的直线斜率为
,若
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e501efaf72113fc8ee3d495004fa980.png)
![](https://img.xkw.com/dksih/QBM/2018/1/4/1853043816693760/1854409555615744/STEM/ddb0cf7ff6a04f7f84153aff2611e1ea.png?resizew=241)
(1)求椭圆的标准方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8189f7b0ffe4d20bf0fad43b4ed589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcb87dc03630d5f929521a16b45fd48b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/658aa70a197c830aa765f2f7ea4c86c5.png)
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2018-01-06更新
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