名校
1 . 已知
是椭圆
的两个焦点,
为坐标原点,点
在椭圆上,且
,
是以
为直径的圆,直线
与
相切,并且与椭圆交于不同的两点
.
(1) 求椭圆的标准方程;
(2) 当
,且满足
时,求弦长
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97b622024e4fe8348bf327f62f3a6ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd0202066314574be270ff41588296e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643ef7d761de0e794fc39937dc72ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc5bd66dd6d5e09ff0893a938aed56e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(1) 求椭圆的标准方程;
(2) 当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6699761bc6b06f2f557dc4a8fd05c26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd30704a29aa12aee831adea646e03f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
![](https://img.xkw.com/dksih/QBM/2018/11/8/2071208495489024/2072499856687104/STEM/7f73852bc28745bcb75db9146ccb0f5a.png?resizew=184)
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2018-11-10更新
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6卷引用:山东省泰安市新泰一中2019-2020学年高二上学期第二次质量检测考试数学试题