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1 . 班级物理社团同学在做光学实验时,发现了一个有趣的现象:从椭圆的一个焦点发出的光线经椭圆形的反射面反射后将汇聚到另一个焦点处.根据椭圆的光学性质解决下面问题:已知椭圆C的方程为
,其左、右焦点分别是
,
,直线l与椭圆C切于点P,且
,过点P且与直线l垂直的直线m与椭圆长轴交于点Q,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/76303b85-13a9-43d4-93ab-b6d3d6d6be5a.png?resizew=148)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb4e8ec60148ff7aaeb0c39e42767e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5357841daf522e6adcb7e0f9fccedef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b89f4ed179b782891879cceaf44c112.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/76303b85-13a9-43d4-93ab-b6d3d6d6be5a.png?resizew=148)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-11-12更新
|
272次组卷
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3卷引用:甘肃省酒泉市2023-2024学年高二上学期期末数学试题
2 . 已知直线
交椭圆
于
、
两点,椭圆的右焦点为
点,则
的周长为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b60e42d256056bb6f6bb4434d27a49b3.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004104bafb5f30338123d4ea2b7fedde.png)
您最近一年使用:0次
2017-02-22更新
|
1281次组卷
|
2卷引用:上海市华东师范大学附属东昌中学2022-2023学年高二上学期期末数学试题