解题方法
1 . 已知椭圆C:
(
)的离心率为
,直线l:
是椭圆C与圆
:
的一条公切线.
(1)求椭圆C的方程;
(2)若点
为椭圆C的一点,直线
:
交圆
于M,N两点,以M,N为切点分别作圆
的切线,两条切线交于点Q,证明:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc35409c8054fe18431c70e6fea0334.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de85df85401e7e8da683ea4a784963c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15839b3af175b63e496dbf320ca7d1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d61985901c2bc698d72ac88f4e1eb65.png)
(1)求椭圆C的方程;
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c8d4762cddd87ca1baa79e0d1e158.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44e8bc37ed03f44470762748a8f942a.png)
您最近一年使用:0次
解题方法
2 . 如图,在平面直角坐标系
中,过
上的点
作切线
,
分别与直线
,
交于点
,圆
与
轴交于点
.
(1)若
点坐标是
,求直线
的方程;
(2)若
是圆
上的动点,证明:两条动直线
的交点
总在同一个椭圆
上,并求出椭圆
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a327470311e876d8489eeb8c66435dc4.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da322ac8867e8a47c6588601078abf18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baf2917e77945b30da7be9b48b0b317a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9454e7762d6924d4a9e5dcf31fb6bc74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf639890f27a42e1383cc6cfa14117a9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/d55806ac-c399-4b9c-b012-1d4e5c5bbf3a.png?resizew=180)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cceff0e7d103475c3ba9a2712f373185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7040823265da65a030f0c81f3ae7ddd0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37254351125380127823c0fd7d95458d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7040823265da65a030f0c81f3ae7ddd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
您最近一年使用:0次
2024-02-23更新
|
93次组卷
|
2卷引用:中原名校2022年高三上学期第一次精英联赛文科数学试题
解题方法
3 . 已知
,函数
.
(1)若
,求
在点
处的切线方程;
(2)求证:
;
(3)若
为
的极值点,点
在圆
上.求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbe45993e6bd636a4f34886bb3d72f42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/788ebf70de03fb27efdb04252024b55a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd277b65fe7f9896b600a7950e57e47.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca84dff2367d3127e8ea7775981345b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/763f6c02b45500e5a42ce71f5e10ed96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
真题
解题方法
4 . 设椭圆
的左、右焦点分别为
,
,A是椭圆上的一点,
,原点O到直线
的距离为
.
(1)证明
;
(2)求
使得下述命题成立:设圆
上任意点
处的切线交椭圆于
两点,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df90497fae2eee9c7c8e7ce3c180d46.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/1b9798e82d9baaba782159f1ff0b954c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabea664e61863b3b3279dbce607924e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a8af2c8284fa7d93d9e12d428ff9a4c.png)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4037561c629fd07503c6803e1eb62fb6.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f8e1cad7acd507f06b9e932b2e84cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa7de36c61b46411ca108be04d35267a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22962a2ad892cb6b14ab039a06e8cdc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357e0872d9e98d662a780e7686de86ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31fbd58d7ab0d4c6a4a3e282beb8a1f5.png)
您最近一年使用:0次
名校
解题方法
5 . 已知点P是椭圆
上一动点,
分别为椭圆的左焦点和右焦点,
的最大值为
,圆
.
(1)求椭圆的标准方程;
(2)过圆O上任意一点Q作圆的的切线交椭圆C于点M,N,求证:以
为直径的圆过点O.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/871868260c78a20767eae39bcdb97476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94fe48bf7af022ecbbe13833fdcc2c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52b33328faae2d2d4921900e97424de5.png)
(1)求椭圆的标准方程;
(2)过圆O上任意一点Q作圆的的切线交椭圆C于点M,N,求证:以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
2021-09-16更新
|
1336次组卷
|
6卷引用:重庆市巴蜀中学2021-2022学年高二上学期开学考试数学试题
重庆市巴蜀中学2021-2022学年高二上学期开学考试数学试题广东省揭阳市普宁市华侨中学2022届高三上学期期中数学试题(已下线)第十一章 圆锥曲线专练14—椭圆大题(证明题)-2022届高三数学一轮复习(已下线)专题3.3 圆锥曲线与方程 章末检测3(难)-【满分计划】2021-2022学年高二数学阶段性复习测试卷(苏教版2019选择性必修第一册)江西省丰城市第九中学、万载中学、宜春一中2022届高三上学期期末联考数学(文)试题(已下线)3.1 椭圆(练习)-高二数学同步精品课堂(苏教版2019选择性必修第一册)
真题
6 . 设
,在平面直角坐标系中,已知向量
,向量
,
,动点
的轨迹为E.
(1)求轨迹E的方程,并说明该方程所表示曲线的形状;
(2)已知
,证明:存在圆心在原点的圆,使得该圆的任意一条切线与轨迹E恒有两个交点A,B,且
(O为坐标原点),并求出该圆的方程;
(3)已知
,设直线
与圆C:
(1<R<2)相切于A1,且
与轨迹E只有一个公共点B1,当R为何值时,|A1B1|取得最大值?并求最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4d1dbacb32c6aa64b346cfc40c5e7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069d5e4878e17bf1f2bd494d5f1c8447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cc74c79951a73d068aa2229f7d415d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a32a090bc3ff8e2e53407c2ae4084cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45ff7e0ef1f622120cc1b18e9d3e80ec.png)
(1)求轨迹E的方程,并说明该方程所表示曲线的形状;
(2)已知
![](https://img.xkw.com/dksih/QBM/2010/3/12/1569631062581248/1569631152578560/STEM/ad66f3538bea4def8499012dccd571f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ada5c15d7b42b2fb2836c3478ae5fb34.png)
(3)已知
![](https://img.xkw.com/dksih/QBM/2010/3/12/1569631062581248/1569631152578560/STEM/ad66f3538bea4def8499012dccd571f5.png)
![](https://img.xkw.com/dksih/QBM/2010/3/12/1569631062581248/1569631152578560/STEM/eb968bca05eb47dcb4e86eb45f24c831.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d443779a9f5889e921a60e5b452a926f.png)
![](https://img.xkw.com/dksih/QBM/2010/3/12/1569631062581248/1569631152578560/STEM/eb968bca05eb47dcb4e86eb45f24c831.png)
您最近一年使用:0次
2019-01-30更新
|
2836次组卷
|
4卷引用:2009年普通高等学校招生全国统一考试文科数学(山东卷)
2009年普通高等学校招生全国统一考试文科数学(山东卷)(已下线)2012-2013学年四川省外语实验学校高二4月数学试卷高中数学解题兵法 第三十四讲 分类讨论是一种重要的解题策略(已下线)专题23 圆锥曲线中的最值、范围问题 微点1 圆锥曲线中的最值问题
名校
解题方法
7 . 已知圆
过点
,
,且圆心
在直线
上,过点
的直线交圆
于
两点,过点
分别作圆
的切线,记为
.
(1)求圆
的方程;
(2)求证:直线
的交点都在同一条直线上,并求出这条直线的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15ed90ebf0061c8a79beed307fc1719a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895b45ce9162e12904639417fa1bfbd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7053364523e655abed4a0c887fae69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d347ce38af382b8667283eef0e38b167.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
您最近一年使用:0次
2011·江苏南京·一模
解题方法
8 . 在直角坐标系
中,直线
与
轴正半轴和
轴正半轴分别相交于
两点,
的内切圆为圆
.
(1)如果圆
的半径为1,
与圆
切于点
,求直线
的方程;
(2)如果圆
的半径为1,证明:当
的面积、周长最小时,此时
为同一个三角形;
(3)如果
的方程为
,
为圆
上任一点,求
的最值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)如果圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f119f6a7eabd36fca6ef25135311e20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)如果圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
(3)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/502bea604848f203c3c6e33bb14318d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e0a0ceab1e6b30513ab7d0b5c376da.png)
您最近一年使用:0次