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解题方法
1 . 已知椭圆C:
过点
,长轴长为
.
(1)求椭圆方程及离心率;
(2)直线l:
与椭圆C交于两点M、N,直线AM、AN分别与直线
交于点P、Q,O为坐标原点且
,求证:直线l过定点,并求出定点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfaba0309c471a4246ca3254a3cdaf17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
(1)求椭圆方程及离心率;
(2)直线l:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b256345d7109e081b7c895591e995d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a089c207e39a24d0d82aa853ac2bbb8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/030c0325fde242e06cee8d270ba89d68.png)
您最近一年使用:0次
2024-03-06更新
|
929次组卷
|
4卷引用:广东省广州市四中2023-2024学年高二下学期3月月考数学试题
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2 . 如图,已知椭圆的标准方程为
,斜率为k且过椭圆右焦点F的直线交椭圆于A、B两点.
![](https://img.xkw.com/dksih/QBM/2021/11/20/2855169756839936/2857699254460416/STEM/49af3674-17b4-45c5-b279-18b45e97623e.png?resizew=263)
(1)若
与
共线.
(i)求椭圆的离心率;
(ii)设P为椭圆上任意一点,且
(λ,μ∈R),当
时,求证:
.
(2)已知椭圆的面积
,当k=1时,△AOB的面积为
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://img.xkw.com/dksih/QBM/2021/11/20/2855169756839936/2857699254460416/STEM/49af3674-17b4-45c5-b279-18b45e97623e.png?resizew=263)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ad7ce915e732d42fdab42890b716c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e457fb5bbf58b821b2059575e28712c.png)
(i)求椭圆的离心率;
(ii)设P为椭圆上任意一点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59bca4c0ab83a3ca3b0ebf03281be74f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f5b26a534cd57031f87deed44ccc76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7590de85fbde1728e65193b933a82bf8.png)
(2)已知椭圆的面积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b62c6f18dd8b0c2706a1891e10135923.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23c3f647d5c34fa92a5034089d14ef32.png)
您最近一年使用:0次
2021-11-23更新
|
715次组卷
|
3卷引用:广东省广州市真光中学2021-2022学年高二上学期12月月考数学试题
3 . 已知椭圆
.
(1)求椭圆
的短轴长和离心率;
(2)过点
的直线
与椭圆
相交于两点
,
,设
的中点为
,点
,判断
与
的大小,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f1b4d114a7dadbed65e454b9e427854.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aa2e31608e60e3fd40c040cfe9d6e8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/277c5edd8134b666c80644af134bfa49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/324e97830480091f58128d6cbceaf17c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/169c5911ed827f65bdebb915fceff7f6.png)
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