名校
1 . 已知椭圆
的离心率为
,且椭圆上的一点与两个焦点构成的三角形周长为
.
(1)求椭圆
的方程;
(2)已知直线
与椭圆
相交于
两点.
①若线段
中点的横坐标为
,求
的值;
②在
轴上是否存在点
,使
为定值?若是,求点
的坐标;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1734bef717187708351c1be3bd035071.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/f1d0aafd52e26c241c46d0206f42f415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
①若线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
②在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df3b467f9181bb96428cb80e89620e22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
名校
2 . 已知中心在原点
,焦点在
轴上的椭圆
过点
,离心率为
.
(1)求椭圆
的方程;
(2)设过定点
的直线
与椭圆
交于不同的两点
,且
,求直线
的斜率
的取值范围;
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cd69bd1da07bc7f4095211880e3b295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设过定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d08fe883f69175aa9d82ec5ee058fcd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33c2ae83552dc50ddcdc4d652f916426.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2018-07-12更新
|
1403次组卷
|
5卷引用:贵州省思南中学2018-2019学年高二下学期期末数学(文)试题
名校
解题方法
3 . 过椭圆
的右焦点
作
轴的垂线,与椭圆
在第一象限内交于点
,过
作直线
的垂线,垂足为
,
,
.
(1)求椭圆
的方程;
(2)设
为圆
上任意一点,过点
作椭圆
的两条切线
、
,设
、
分别交圆
于点
、
,证明:
为圆
的直径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/968bc863acdb4f2b0cba33157363e711.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69c82927466edee0d7a2ee70b25750e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f384d8c9db92c65c39bc0ccdc1934e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9da94e086cd97648be89d1493cb7795.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/243c24bdf5fac6515cde4f429ed36727.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e13d27ccc79cd4f4fc8f65ecb91edd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce619c464f2aa04178ea0111ba60544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9d9ccc4246c82939d8a659db9f28a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce619c464f2aa04178ea0111ba60544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9d9ccc4246c82939d8a659db9f28a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9eeee83b4b7c6ceac7828ff534ce15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
您最近一年使用:0次
4 . 已知斜率为
的直线
与椭圆
交于
,
两点,线段
的中点为
.
(1)证明:
;
(2)设
为
的右焦点,
为
上一点,且
.证明:
,
,
成等差数列,并求该数列的公差.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15befbdad977723a86194979c675ee5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a159de0b2d9eb1ae0b7e664e64d3c6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a683a007c5955ffc6511d7606aef9620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a98f0cf8d69174512902ca217e23fc24.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cd912d7973e682bb5881daec6e0cb3c.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655b6a742dbacdab5aaa298007663dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ba227ef5920e530b06bfcaf384c0a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c14b7ce6761c9b8531b08feecda615.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90c871a12d7f112dd59e3532fc7215d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9979d3616e454a1c883efa63438c8544.png)
您最近一年使用:0次
2018-06-09更新
|
26567次组卷
|
32卷引用:贵州省贵阳市五校2022届高三11月联合考试数学(理)试题(三)
贵州省贵阳市五校2022届高三11月联合考试数学(理)试题(三)2018年全国普通高等学校招生统一考试理科数学(新课标III卷)(已下线)2018年高考题及模拟题汇编 【理科】6.解析几何(已下线)2018年11月16日 《每日一题》文数人教版一轮复习-直线与椭圆的位置关系(1)(已下线)专题9.5 椭圆(练)【理】-《2020年高考一轮复习讲练测》(已下线)专题9.5 椭圆(练)【文】-《2020年高考一轮复习讲练测》2020届湖南省长沙市长郡中学高三下学期3月“停课不停学”阶段性检测数学(文)试题(已下线)秒杀题型02 椭圆、双曲线、抛物线定义-2020年高考数学试题调研之秒杀圆锥曲线压轴题江西省抚州市南城县第二中学2019-2020学年高二下学期开学考试数学(理)试题(已下线)专题08 平面解析几何(解答题)——三年(2018-2020)高考真题理科数学分项汇编(已下线)专题20 圆锥曲线综合-2020年高考数学(理)母题题源解密(全国Ⅲ专版)(已下线)专题18 解析几何综合-五年(2016-2020)高考数学(理)真题分项(已下线)专题26 椭圆-十年(2011-2020)高考真题数学分项河北省唐山市第十一中学2021届高三上学期9月入学检测数学试题(已下线)考点41 直线与圆锥曲线的位置关系-备战2021年高考数学(理)一轮复习考点一遍过吉林省长春市第二实验中学2020-2021学年高二上学期期中考试数学(理)试题(已下线)精做05 解析几何-备战2021年高考数学大题精做(新高考专用)(已下线)专题4.5 圆锥曲线-2021年高考数学解答题挑战满分专项训练(新高考地区专用)陕西省西安中学2021届高三下学期第七次模拟考试理科数学试题江西省赣州市第一中学2020-2021学年高二下学期期末数学试题(已下线)解密18 椭圆(分层训练)-【高频考点解密】2021年高考数学(理)二轮复习讲义+分层训练高中数学解题兵法 第八十五讲 关注联结,催生思路江苏省苏州实验中学等三校2021-2022学年高二上学期12月联考数学试题(已下线)专题47 盘点圆锥曲线中的几何证明问题——备战2022年高考数学二轮复习常考点专题突破(已下线)专题43 盘点圆锥曲线与平面向量交汇问题——备战2022年高考数学二轮复习常考点专题突破(已下线)专题10 焦半径公式的应用 微点2 焦半径公式的应用综合训练(已下线)专题11 圆锥曲线第三定义与点差法 微点2 圆锥曲线中点弦问题与点差法(已下线)专题19 圆锥曲线解答题四川省南充高级中学2022-2023学年高三上学期第4次模拟测试数学理科试题四川省南充高级中学2022-2023学年高三上学期第四次月考数学试题(理)河南省信阳高级中学2022-2023学年高二上学期月考(五)数学试题(已下线)专题24 解析几何解答题(理科)-3
名校
5 . 如图,椭圆
经过点
,且点
到椭圆的两焦点的距离之和为
.
(l)求椭圆
的标准方程;
(2)若
是椭圆
上的两个点,线段
的中垂线
的斜率为
且直线
与
交于点
,
为坐标原点,求证:
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c6c165696e06db3c99640efea78d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
(l)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbbbc9c5353894f2c93c205c3ac04f03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08cce6cac0fdd4b1a434af8bcaec8fef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08cce6cac0fdd4b1a434af8bcaec8fef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdc4a11180bbca41602777e91d59b9bc.png)
![](https://img.xkw.com/dksih/QBM/2018/5/1/1935767659257856/1936534667313152/STEM/2161f9b694a74c3486c35f25f8ca3862.png?resizew=176)
您最近一年使用:0次
2018-05-02更新
|
1120次组卷
|
12卷引用:贵州省铜仁市西片区高中教育联盟2017-2018学年高二下学期期末考试数学(理)试题
贵州省铜仁市西片区高中教育联盟2017-2018学年高二下学期期末考试数学(理)试题【全国市级联考】辽宁省朝阳市普通高中2018届高三第三次模拟考试数学(理)试题安徽省六安市毛坦厂中学2018届高三下学期四月月考数学(理)试题【全国市级联考】辽宁省朝阳市普通高中2018届高三第三次模拟考试数学(文)试卷安徽省六安市毛坦厂中学2018届高三下学期四月月考数学(文)试题【全国百强校】广西柳州二中2017-2018学年高二下学期段考数学(理)试题安徽卓越县中联盟(舒城中学、无为中学等)2019-2020学年高二12月素质检测数学(文)试题黑龙江省鹤岗市工农区第一中学2019-2020学年高二上学期期末数学(文)试题甘肃省白银市会宁县第一中学2019-2020学年高二上学期期末数学(文)试题(已下线)【新教材精创】2.5.1+椭圆的标准方程-B提高练-人教B版高中数学选择性必修第一册(已下线)【新教材精创】3.1.1+椭圆及其标准方程-B提高练-人教A版高中数学选择性必修第一册甘肃省定西市临洮县文峰中学2021-2022学年高二下学期期中考试数学(理)试题
名校
解题方法
6 . 设椭圆
的离心率
,左焦点为
,右顶点为
,过点
的直线交椭圆于
两点,若直线
垂直于
轴时,有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1c0a43afe77e1b5e41340b2c3463080.png)
(1)求椭圆的方程;
(2)设直线
:
上两点
,
关于
轴对称,直线
与椭圆相交于点
(
异于点
),直线
与
轴相交于点
.若
的面积为
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00df4f17848c072b51e80d427d486e31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00d0330a8fa062b040128460bb2f0052.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b8b07b8a0d9fbe43a524ae8bf7a720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5481c3c38cf999b4dacada15ea517b8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1c0a43afe77e1b5e41340b2c3463080.png)
(1)求椭圆的方程;
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589a4d5f5fb135a3144644595774b896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80672dda9430cb42b3136bcb1b67bbad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15bdee7807edba89958c84bf4bb85f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbc0ce5eed6eeba02618f17d5b306bba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eb00a19477b29b325a5e334207f6b18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80672dda9430cb42b3136bcb1b67bbad.png)
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2018-04-23更新
|
992次组卷
|
4卷引用:【全国百强校】贵州省遵义航天高级中学2019届高三第七次模拟考试数学(文)试题
7 . 已知点P为曲线C上任意一点,
,直线
、
的斜率之积为
.
(1)求曲线
的轨迹方程;;
(2)是否存在过点
的直线
与椭圆
交于不同的两点
、
,使得
?若存在,求出直线
的方程;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/912fac84002fe9a9dce2bd1b2f557d1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)是否存在过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cea2ee961ab8fb1ea30750120afe786.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/37410a198f73e3ca4318566ef481e5a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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8 . 已知椭圆
:
的左、右焦点分别为
、
,上顶点为A.动直线
:
经过点
,且
是等腰直角三角形.
(1)求椭圆
的标准方程;
(2)设直线
交
于
、
两点,若点
在以线段
为直径的圆上,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8316774142e2443cab45d5e504eae803.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2cfd997d3b66a3b8f7731b26f0ab0c8.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设直线
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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9 . 已知椭圆
:
的左、右焦点分别为
、
,上顶点为
.动直线
:
经过点
,且
是等腰直角三角形.
(1)求椭圆
的标准方程;
(2)设直线
交
于
、
两点,若点
在以线段
为直径的圆外,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c409cd0d020891a5584e8a25374eb78f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2cfd997d3b66a3b8f7731b26f0ab0c8.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设直线
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
10 . 已知离心率为
的椭圆
的下、上焦点分别为
,直线
过椭圆
的焦点
,与椭圆交于
两点,若点
到
轴的距离是点
到
轴距离的2倍,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec3861ed9a20adbd16261163051f7d58.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f04443a0c1cf4808aea741c9f9379b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acd55f837e9c4e6bba1163ef13edd09b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec3861ed9a20adbd16261163051f7d58.png)
您最近一年使用:0次