名校
1 . 已知曲线C的方程为
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42a7ae89968005cb709501fa5eec9b9d.png)
A.当![]() |
B.“![]() |
C.存在实数![]() ![]() |
D.当![]() ![]() |
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解题方法
2 . 如图,在圆
上任取一点
,过点
作
轴的垂线段
,
为垂足,线段
的中点为
.(当点
经过圆与
轴的交点时,规定点
与点
重合.)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/498357f1-6113-4a2b-ac0a-4d86839b993f.png?resizew=167)
(1)求动点
的轨迹
的方程;
(2)已知点
,
为轨迹
上异于
的两点,且
,判断直线
是否过定点,若过定点,求出该定点坐标.若不过定点,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/498357f1-6113-4a2b-ac0a-4d86839b993f.png?resizew=167)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383f12cb70ca55eba4ff012771dbfa9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6b93dbe5272a5167ff4e2918bec864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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解题方法
3 . 已知椭圆
过点
,离心率为
.
![](https://img.xkw.com/dksih/QBM/2022/1/22/2899774921129984/2909124976984064/STEM/12edb5da-9f0e-4a27-82d9-6bee0b2e1ae9.png?resizew=150)
(1)求椭圆的标准方程;
(2)过椭圆的上顶点作直线l交抛物线
于A,B两点,O为坐标原点.
①求证:
;
②设OA,OB分别与椭圆相交于C,D两点,过点O作直线CD的垂线OH,垂足为H,证明:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4ca616e225686a236f7c2db3e16dfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eb7c44fbd558182e05b1f82e4c337c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://img.xkw.com/dksih/QBM/2022/1/22/2899774921129984/2909124976984064/STEM/12edb5da-9f0e-4a27-82d9-6bee0b2e1ae9.png?resizew=150)
(1)求椭圆的标准方程;
(2)过椭圆的上顶点作直线l交抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10f4123c19136d3a4dc040dce8e34e14.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
②设OA,OB分别与椭圆相交于C,D两点,过点O作直线CD的垂线OH,垂足为H,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f33a489fa920ff269b00784034def90a.png)
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名校
4 . 已知椭圆
上一点
到左焦点
的距离为
,
是
的中点,则
( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914075a4574c09bdb860d8f8f09a4e7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b67528f875a6d4bac8bbf784f7b66a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ce9da1390cca752cd508e1f4190df6.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
2021-12-27更新
|
1520次组卷
|
5卷引用:安徽省宣城市2021-2022学年高二上学期期末数学试题
解题方法
5 . 已知椭圆
上的点
到左右两个焦点
,
的距离之和等于4.
(1)求椭圆C的方程;
(2)设过原点O且与坐标轴不垂直的直线n交椭圆C于M,N两点,点
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07d38c670ff6957144c4a8d2550065c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
(1)求椭圆C的方程;
(2)设过原点O且与坐标轴不垂直的直线n交椭圆C于M,N两点,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e9a62ad651d31cd5e7fec2c9d42b282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38d0469336f71edd52dc9148c67db052.png)
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名校
解题方法
6 . 已知椭圆
的左右顶点分别为
,椭圆
上不同于
的任意一点
,直线
和
的斜率之积为
.
![](https://img.xkw.com/dksih/QBM/2021/2/4/2650929514004480/2652141023166464/STEM/433921c5-bd52-4b97-ae99-dd5319ffb5ad.png?resizew=260)
(1)求椭圆
的标准方程;
(2)过椭圆内一点
,作一条不垂直于
轴的直线交椭圆于
两点,点
和点
关于
轴对称,直线
交
轴于点
,证明:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d72a07a4e5acfc140a3cea1f26b951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/728b3360d5c6394457b907f1cbc31a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/800c5e266b4ad8462a46970f0a232d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46b053f98b1d05a2043e94eeaefea87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78fd95f89dec2d373fa57f02acd739f.png)
![](https://img.xkw.com/dksih/QBM/2021/2/4/2650929514004480/2652141023166464/STEM/433921c5-bd52-4b97-ae99-dd5319ffb5ad.png?resizew=260)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过椭圆内一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a758f5f679810a247319fa8162c113.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432aae51854129e8c10f7c34c0c3a79f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb74ca8fc86ddef279e33f31c1fedda.png)
您最近一年使用:0次
2021-02-06更新
|
402次组卷
|
4卷引用:安徽省宣城市第二中学2020-2021学年高二下学期第一次月考理科数学试题
7 . 在圆
内有一点
,动点M为圆A上任意一点,线段
的垂直平分线与半径
相交于点N,设点N的轨迹为C.
(1)求轨迹C的方程;
(2)若直线
与轨迹C交于不同两点E,F,轨迹C上存在点P,使得以
为邻边的四边形
为平行四边形(O为坐标原点),求证:
的面积为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c86071b97e3d0673cdd85a6b9c51fef0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b47e7bf02b3ca16f7d96b9369e51a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
(1)求轨迹C的方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc5bd66dd6d5e09ff0893a938aed56e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8163aaa40962f5d8741e9a119688b1c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e311b2e11784551cf8d0a4a70161887d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22a70b91e48c6c0435789cc656a19465.png)
您最近一年使用:0次
2021-02-03更新
|
929次组卷
|
7卷引用:安徽省宣城市2020-2021学年高二上学期期末理科数学试题
名校
8 . 已知椭圆的左焦点为
,右顶点为
,设点
的坐标是
.
(1)求该椭圆的标准方程;
(2)若
是椭圆上的动点,求线段
的中点
的轨迹方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46542271c7fa06f33b222424838c9684.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/269a51e0f77f63bae2df3dc8b1d4f455.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bac7c28099bfbb7dc2a45ad166eace05.png)
(1)求该椭圆的标准方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2020-11-28更新
|
1032次组卷
|
3卷引用:安徽省宣城市第三中学2020-2021学年高二上学期第三次月考数学(文)试题
名校
解题方法
9 . 设椭圆
:
的左,右焦点分别为
,
,其离心率为
,过
的直线
与
交于
,
两点,且
的周长为
.
(1)求椭圆
的方程;
(2)设椭圆
的上顶点为
,证明:当
的斜率为
时,点
在以
为直径的圆上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.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/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bf0cf2f9b056030f17dfba06f62b1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2020-09-20更新
|
456次组卷
|
8卷引用:安徽省郎溪中学2018-2019学年高二下学期期末模拟数学(文)试题.
安徽省郎溪中学2018-2019学年高二下学期期末模拟数学(文)试题.江苏省镇江中学2020-2021学年高二上学期期初数学试题(已下线)【南昌新东方】 江西省南昌八中2020-2021学年高二上学期10月第一次月考数学试题河北省石家庄市四中2021-2022学年高二上学期期中数学试题(已下线)高二上学期期中【全真模拟卷01】(人教A版2019)(原卷版)【市级联考】河北省唐山市2019届高三下学期第一次模拟考试数学(文)试题(已下线)专题06 解析几何中的定点、定值问题(第五篇)-备战2020年高考数学大题精做之解答题题型全覆盖2020届天津市第一百中学高考模拟数学试题
解题方法
10 . 设椭圆
的离心率为
,以椭圆四个顶点为顶点的四边形的面积为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/5b52d411-09a8-4b04-ac72-bec8bec05285.png?resizew=204)
(1)求椭圆E的方程;
(2)过椭圆E的右焦点
作直线
与E交于A,B两点,O为坐标原点,求
面积的最大值,并求此时直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/5b52d411-09a8-4b04-ac72-bec8bec05285.png?resizew=204)
(1)求椭圆E的方程;
(2)过椭圆E的右焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2020-04-27更新
|
561次组卷
|
2卷引用:安徽省宣城市2019-2020学年高二上学期期末文科数学试题