名校
解题方法
1 . 椭圆
的离心率为
,过其右焦点
与长轴垂直的直线与椭圆在第一象限相交于点
,
.
(1)求椭圆
的标准方程;
(2)设椭圆
的左顶点为
,右顶点为
,点
是椭圆上的动点,且点
与点
,
不重合,直线
与直线
相交于点
,直线
与直线
相交于点
,求证:以线段
为直径的圆恒过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/349e47b1095047793140c22701a6aa32.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09fcb20a6972108871adbf284f9e5006.png)
您最近一年使用:0次
名校
解题方法
2 . 已知椭圆
的左,右焦点分别为
,
,点
在椭圆
上,
,且
.
(1)求椭圆
的标准方程;
(2)设直线
与椭圆
相交于
,
两点,与圆
相交于
,
两点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a200ca2c4af794f4d1c6a5443830b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9bece414af7ecb2d796dc8a6f549e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e62a44b8712ce4483b8710cda0dc1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2dfb22c6f1c155747100e7536cd1abd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd29aa3bd463abf39a3f63e077abcc28.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad4a18beaf2bd806ae4ce185ccce0010.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e4be819fc47b2aa19ab2022b3dfeb6f.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/cdf6f64871b0148d887f64ee456f826d.png)
您最近一年使用:0次
2020-09-25更新
|
700次组卷
|
7卷引用:广西桂林普通高中2022届高三1月教学质量检测数学(理)试题
广西桂林普通高中2022届高三1月教学质量检测数学(理)试题2020届四川省成都市高三第二次诊断性检测理科数学试题吉林省长春市八中2020届高三第二次诊断性检测数学(理)试题重庆市渝北区、合川区、江北区等七区2019-2020学年高二下学期期末联考数学试题(已下线)调研测试五(B卷 滚动提升检测)-2021年高考数学(理)一轮复习单元滚动双测卷四川省成都市第十二中学2020-2021学年高二下学期期中数学试题(已下线)江苏省南通市如皋市2022-2023学年高三上学期教学质量调研(一) 数学模拟试题
10-11高三下·湖南长沙·阶段练习
名校
解题方法
3 . 给定椭圆
,称圆心在原点
,半径为
的圆是椭圆
的“海中圆”.若椭圆
的一个焦点为
,其短轴上的一个端点到
的距离为
.
(1)求椭圆
的方程和其“海中圆”方程;
(2)点
是椭圆
的“海中圆”上的一个动点,过点
作直线
,
,使得
,
与椭圆
都只有一个交点.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/215bb197d894dc7d3c96228778d04684.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c3224fbb9ff94c62064d9e86ba021ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](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/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce08b357f11ef44c3e8207ac574422a.png)
您最近一年使用:0次
2020-09-23更新
|
295次组卷
|
5卷引用:广西贵港市高级中学2022届高三毕业班5月模拟考试数学(理)试题
广西贵港市高级中学2022届高三毕业班5月模拟考试数学(理)试题2019届广西柳州市高三10月模拟考试数学(理)试题(已下线)2011届湖南省长沙市长望浏宁四县高三3月调研考试数学理卷贵州省遵义市2018-2019学年度高二上学期期末文科数学试题福建省泰宁第一中学2018-2019学年高二上学期第二阶段考试数学(理)试题
名校
解题方法
4 . 已知椭圆
的四个顶点围成的菱形的面积为
,椭圆的一个焦点为
.
(1)求椭圆的方程;
(2)若
,
为椭圆上的两个动点,直线
,
的斜率分别为
,
,当
时,
的面积是否为定值?若为定值,求出此定值;若不为定值,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41322821ce31416fdac8dd6e0aa41c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
(1)求椭圆的方程;
(2)若
![](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/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.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/f5ba85c5c6886ba2f8aa913035c00c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f02028a3847c4807c2d3cf0ea7efb8.png)
您最近一年使用:0次
2020-08-18更新
|
375次组卷
|
7卷引用:2020届广西柳州市高三毕业班4月模拟(三模)文科数学试题
2020届广西柳州市高三毕业班4月模拟(三模)文科数学试题广西柳州市2019-2020学年高三4月模拟考试数学(理)试题陕西省2020届高三下学期第二次模拟文科数学试题(已下线)专题21 圆锥曲线综合-2020年高考数学(文)母题题源解密(全国Ⅲ专版)(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)江西省南昌市南昌县莲塘二中2020-2021学年高二9月检测理数试题陕西省延安市2023-2024学年高二上学期阶段性学习效果评估(二)数学试题
名校
解题方法
5 . 已知椭圆的焦点坐标为
,
,过
垂直于长轴的直线交椭圆于
、
两点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/83df58ab-d911-4ace-ab7f-468d12e20194.png?resizew=161)
(1)求椭圆的方程;
(2)过
的直线
与椭圆交于不同的两点
、
,则
的内切圆的面积是否存在最大值?若存在求出这个最大值及此时的直线方程;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e9d55173f26afdf0e37462b556a605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6d6f746c2355072d914591bf60c3801.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd0e7f401da0c4a145ae816ee0994eca.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/83df58ab-d911-4ace-ab7f-468d12e20194.png?resizew=161)
(1)求椭圆的方程;
(2)过
![](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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ea1c3fe8431260ecb8dffcdae8d570.png)
您最近一年使用:0次
2020-08-18更新
|
1052次组卷
|
18卷引用:广西桂林、崇左、防城港市2020届高三联合模拟考试数学(理)试题
广西桂林、崇左、防城港市2020届高三联合模拟考试数学(理)试题广西桂林、崇左、防城港市2020届高三联合模拟考试数学(文)试题2015届重庆市巴蜀中学高三上学期第一次模拟考试文科数学试卷2015届浙江省桐乡一中高三下学期联盟学校高考仿真测试理科数学试卷2016届安徽师大附中高三最后一卷理科数学试卷【全国百强校】广西南宁市第二中学2018-2019学年高二下学期期中考试数学(理)试题2015届福建省莆田一中等高三上学期三校联考理科数学试卷【全国百强校】宁夏银川一中2018-2019学年高二上学期期中考试期中数学(文)试题【全国百强校】浙江省绍兴市第一中学2019届高三上学期期末考试数学试题【全国百强校】浙江省杭州第十四中学2019届高三8月月考数学试题山西省忻州市第一中学2019-2020学年高二上学期期末数学(理)试题2020届浙江省宁波市镇海中学高三下学期3月高考模拟测试数学试题(已下线)专题22 圆锥曲线中的定点、定值、探索性问题(解答题)-冲刺2020高考跳出题海之高三数学模拟试题精中选萃(浙江专版)(已下线)专题21 圆锥曲线综合-2020年高考数学(文)母题题源解密(全国Ⅲ专版)(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)黄金卷10-【赢在高考·黄金20卷】备战2021年高考数学全真模拟卷(江苏专用)湖南省长沙市雅礼中学2021-2022学年高二上学期9月月考数学试题辽宁省东北育才学校2021-2022学年高三上学期第三次模拟考试数学试题
名校
解题方法
6 . 已知椭圆
上的点
到左、右焦点
,
的距离之和为
,且离心率为
.
(1)求椭圆的标准方程;
(2)过
的直线
交椭圆于
,
两点,点
与点
关于
轴对称,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(1)求椭圆的标准方程;
(2)过
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/439a3a21c4186208d136425e49d23c84.png)
您最近一年使用:0次
2020-08-18更新
|
339次组卷
|
7卷引用:广西桂林、崇左、贺州2019-2020学年高三5月联合模拟考试数学(文)试题
广西桂林、崇左、贺州2019-2020学年高三5月联合模拟考试数学(文)试题2020届湖南省邵阳市高三下学期5月二模文科数学试题贵州省部分学校2019-2020学年高三联合考试数学理科试题2020届湖南省邵阳市高三二模理科数学试题(已下线)专题21 圆锥曲线综合-2020年高考数学(文)母题题源解密(全国Ⅲ专版)(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)江苏省连云港市板浦高级中学2020-2021学年高三上学期期末模拟测试二数学试题
解题方法
7 . 已知椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
的左、右焦点分别为
、
,点
在椭圆上,且椭圆的离心率为
.
(1)求椭圆的标准方程;
(2)直线
过椭圆左焦点
,与椭圆交于
,
两点,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/434249d6640b0c1a712d215cf8b83d5c.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/dea8a480a2fe03293cb8303da8837d7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求椭圆的标准方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/becdcb8a871e8965853acf0687034c28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.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/e5eb2485f90dbfd0dfd6e7d179a856f5.png)
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2020-04-16更新
|
516次组卷
|
2卷引用:广西玉林市育才中学2021届高三5月三模数学(理)试题
8 . 已知
是椭圆
的左右顶点,
点为椭圆
上一点,点
关于
轴的对称点为
,且
.
(1)若椭圆
经过圆
的圆心,求椭圆
的方程;
(2)在(1)的条件下,若过点
的直线与椭圆
相交于不同的
两点,设
为椭圆
上一点,且满足
(
为坐标原点),当
时,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ca00309261a540934d9b3ed9ba05b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09efa89f6c8ccce51348b1446dd6486d.png)
(1)若椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3bcfcc5fdcec676875e253087acc568.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)在(1)的条件下,若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92a0d4c22734cac795de1e5c5fbefa87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dfccfba0f6b1c0762a9cb37c3f6fff0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c61d87afce5032c1ff9feefd6f0950a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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2020-03-20更新
|
601次组卷
|
4卷引用:2019届广西南宁市第二中学高三最后一模数学(理)试题
2019届广西南宁市第二中学高三最后一模数学(理)试题2019届广西南宁市第二中学高三最后一模数学(文)试题山西省实验中学2019-2020学年高三下学期3月开学摸底数学(文)试题(已下线)专题46 盘点圆锥曲线中的最值与范围问题——备战2022年高考数学二轮复习常考点专题突破
9 . 已知椭圆
的右顶点为A,左,右焦点为F1,F2,过点F2与x轴垂直的直线与椭圆的一个交点为B.若|F1F2|=2,|F2B|
,则点F1到直线AB的距离为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e43c3621b12e03422ae9868c78e3327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb6da35cb03b489e795ee5f6b612a11.png)
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2020-03-17更新
|
277次组卷
|
2卷引用:2020届广西梧州市贺州市高三毕业班摸底调研考试数学文科试题
解题方法
10 . 已知椭圆C:
的一个顶点为
,离心率
,直线
交椭圆于M,N两点,如果△BMN的重心恰好为椭圆的左焦点F,则直线
方程为___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d429efe96d68065e7d433c996682791d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd38f55d7cdae1de6e2a2e2c6e1e57d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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