1 . 如图,在平面直角坐标系xOy中,已知椭圆C:
1(a>b>0)的离心率e
,左顶点为A(﹣4,0),过点A作斜率为k(k≠0)的直线l交椭圆C于点D,交y轴于点E.
(2)已知P为AD的中点,是否存在定点Q,对于任意的k(k≠0)都有OP⊥EQ,若存在,求出点Q的坐标;若不存在说明理由;
(3)若过O点作直线l的平行线交椭圆C于点M,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bd4fd9bfd38c5361d55735bfe4bb2d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a50a39604477d1d9326eb455cda2e838.png)
(2)已知P为AD的中点,是否存在定点Q,对于任意的k(k≠0)都有OP⊥EQ,若存在,求出点Q的坐标;若不存在说明理由;
(3)若过O点作直线l的平行线交椭圆C于点M,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96f930214ada24a67a1877ded973076.png)
您最近一年使用:0次
2022-04-07更新
|
747次组卷
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9卷引用:2016届江苏省淮安、宿迁、连云港、徐州苏北四市高三上期末数学试卷
2016届江苏省淮安、宿迁、连云港、徐州苏北四市高三上期末数学试卷天津市滨海新区2021届高三下学期三模数学试题黑龙江省哈尔滨师范大学附属中学2021-2022学年高三上学期期中考试数学(理)试题黑龙江省哈尔滨师范大学附属中学2021-2022学年高三上学期期中考试数学(文)试题(已下线)专题3.5 直线与椭圆的位置关系-重难点题型精讲-2021-2022学年高二数学举一反三系列(人教A版2019选择性必修第一册)江西省吉安市第一中学2022-2023学年高二上学期12月月考数学试题湖南省长沙市明德中学2022-2023学年高二下学期三段考数学试题江苏省南京田家炳高级中学2023-2024学年高二上学期期中模拟数学试题天津市嘉诚中学2023-2024学年高二上学期阶段测试二数学试卷
名校
解题方法
2 . 1.已知椭圆
的短轴长为
,直线l:
与x轴交于点A,椭圆的右焦点为F,
,过点A的直线与椭圆交于P,Q两点.
(1)求椭圆的方程及离心率;
(2)若
,求直线PQ的方程;
(3)过点P且平行于y轴的直线交椭圆于另一点M,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa5d6092f598c7da4796f965e40525a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1d51f05e0d2f64f6aacf208ddcda201.png)
(1)求椭圆的方程及离心率;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da983aa9df47f0b324f72dc3e44e9f42.png)
(3)过点P且平行于y轴的直线交椭圆于另一点M,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80110e884d8a8ad798087ab3d2a54a18.png)
您最近一年使用:0次
3 . 1.已知椭圆
的离心率为
,过焦点且垂直于长轴的弦长等于1
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/cc9b7092-8503-4945-b975-70144fe62f71.png?resizew=284)
(1)求椭圆的方程;
(2)直线
交椭圆于A,B两点,且AB被直线
平分.
①若
的面积等于1(O是坐标原点),求l的方程;
②椭圆的左右焦点分别是
,
,
,
的重心分别是
,
,当原点O落在以CD为直径的圆外部时,求
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/cc9b7092-8503-4945-b975-70144fe62f71.png?resizew=284)
(1)求椭圆的方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f24e616b5a35ff372c78c1472f156ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f52cb58b6bc5d71030463ba7e28134.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
②椭圆的左右焦点分别是
![](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/d3c07ebcbfacda073208d483c58e8a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5eb2485f90dbfd0dfd6e7d179a856f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
您最近一年使用:0次
2021-11-04更新
|
1255次组卷
|
3卷引用:浙江省绍兴市诸暨市2017-2018学年高二上学期期末数学试题
名校
解题方法
4 . 已知椭圆
,离心率
.直线
与
轴交于点
,与椭圆
相交于
两点.自点
分别向直线
作垂线,垂足分别为
.
(Ⅰ)求椭圆
的方程及焦点坐标;
(Ⅱ)记
,
,
的面积分别为
,
,
,试证明
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069ffc1e3936d254303d588e1a70a3aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/234e7679481ec0d01c915b7fbb71891d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f51698f7095e795d4f0527b986ac1db2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d4c9a27635035cd982ad546e4675ae6.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b9329a9ac91c0904b0c0dab7444d57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cbd232ceb4f9d0ef81f4a94e603abcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9690f3ace672b3de492cfebb2c7b8096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb9c8bd2a8d905ee3aa7ab6bcd3ec55f.png)
您最近一年使用:0次
2021-03-19更新
|
2375次组卷
|
5卷引用:【校级联考】广东省佛山一中、珠海一中、金山中学2018-2019学年高二下学期期中考试数学(理)试题
【校级联考】广东省佛山一中、珠海一中、金山中学2018-2019学年高二下学期期中考试数学(理)试题(已下线)卷01-【赢在高考·黄金20卷】备战2021年高考数学全真模拟卷(北京专用)(已下线)专题1.11 圆锥曲线-定点、定值、定直线问题-2021年高考数学解答题挑战满分专项训练(新高考地区专用)湖北省武汉市蔡甸区汉阳一中2021届仿真模拟(一)数学试题北京市一零一中学2022届高三下学期三模数学试题
2020高三·全国·专题练习
解题方法
5 . 已知椭圆
经过点
,其离心率为
,设直线
与椭圆
相交于
、
两点.
(1)求椭圆
的方程;
(2)已知直线
与圆
相切,求证:
(
为坐标原点).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52ad4a60e2b50a820ec2044aa55f2472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc5bd66dd6d5e09ff0893a938aed56e.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)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c83f9e7f57d03304c3d0e51f43aa5e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
您最近一年使用:0次
名校
解题方法
6 . 已知椭圆
经过点
,离心率为
,左右焦点分别为
,
.
(1)求椭圆
的方程;
(2)
是
上异于
的两点,若直线
与直线
的斜率之积为
,证明:
两点的横坐标之和为常数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f034ca3728461235578233174da40e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cfa1e7ffae662aefb49a44c52d4954d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5076829e649b3f3866d4a7e07a5713e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ace7c9e3da8613175ca07c54c116127a.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/affbbbc112ab58e6b7066ce1c7699db0.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/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78fd95f89dec2d373fa57f02acd739f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
您最近一年使用:0次
2021-01-06更新
|
1137次组卷
|
7卷引用:【校级联考】闽粤赣三省十校2019届高三下学期联考数学(理)试题
【校级联考】闽粤赣三省十校2019届高三下学期联考数学(理)试题【全国百强校】西藏自治区拉萨中学2019届高三第六次月考数学(理)试题西藏昌都市第一高级中学2021届高三上学期期末考试数学(理)试题(已下线)押第20题 解析几何-备战2021年高考数学(文)临考题号押题(全国卷1)(已下线)押第20题 解析几何-备战2021年高考数学(理)临考题号押题(全国卷1)(已下线)专题6椭圆(已下线)专题32 一类与斜率和、差、商、积问题的探究-2
20-21高三上·江苏南通·阶段练习
7 . 已知中心在原点,焦点在
轴上的椭圆
过点
且离心率
,过点
作直线与椭圆交于
、
两点.
![](https://img.xkw.com/dksih/QBM/2020/12/24/2621025229553664/2622614389030912/STEM/631a27c1-9334-468b-bfda-f9ed8d7b1da1.png?resizew=311)
(1)求椭圆
的方程;
(2)求证:
;
(3)求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d56ab70e602f2e2e291df643ab209162.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075ba8c6fb5ef7288cd3fed425c8e69e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11522dc520d7c4e072b17a066fcf2465.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/2020/12/24/2621025229553664/2622614389030912/STEM/631a27c1-9334-468b-bfda-f9ed8d7b1da1.png?resizew=311)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83640592853a53872d7af69c0cffc1bb.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/596ff257d3065dd364f23ad26eac79d9.png)
您最近一年使用:0次
名校
解题方法
8 . 椭圆
的中心为坐标原点
,点
,
分别是椭圆的左、右顶点,
为椭圆的上顶点,一个焦点为
,离心率为
.点
是椭圆
上在第一象限内的一个动点,直线
与
轴交于点
,直线
与
轴交于点
.
(1)求椭圆
的标准方程;
(2)若把直线
,
的斜率分别记作
,
,求证:
;
(3)是否存在点
使
,若存在,求出点
的坐标,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ce47fde921058026708a4321a0e213.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9399c9a2a31b0e3165aea2d6ccc4f7c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07c2cc110e46ae4b3432814810e28bcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若把直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe61d39d080872caa8973a70a3b4955.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448eb7d301baa90fe59b05761830f81f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eac9ba606fb477550aa62db7bfa0ac4.png)
(3)是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/156cfccea50b8adbe3d691c65f29915f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
9 . 在直角坐标系
中,椭圆
:
的离心率为
,左、右焦点分别是
,
,
为椭圆
上任意一点,
的最小值为8.
![](https://img.xkw.com/dksih/QBM/2020/11/28/2602829046685696/2604978244599808/STEM/c2cc5def4580439b84718fc1b913bd6e.png?resizew=226)
(1)求椭圆
的方程;
(2)设椭圆
:
,
为椭圆
上一点,过点
的直线交椭圆
于
,
两点,且
为线段
的中点,过
,
两点的直线交椭圆
于
,
两点.当
在椭圆
上移动时,四边形
的面积是否为定值?若是,求出该定值;不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fec76fdab2374fc367e3a655df4b4bcc.png)
![](https://img.xkw.com/dksih/QBM/2020/11/28/2602829046685696/2604978244599808/STEM/c2cc5def4580439b84718fc1b913bd6e.png?resizew=226)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)设椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e96efb9b6f37183500d509a697202696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2752e086b85f9fbb95010bf771072af9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ec3f44cd7f4689920e5df628177737.png)
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