名校
解题方法
1 . 已知椭圆C:
的离心率为
,右焦点为F,上顶点为A,且△AOF的面积为
(O为坐标原点).
(1)求椭圆C的方程;
(2)设P是椭圆C上的一点,过P的直线与以椭圆的短轴为直径的圆切于第一象限内的一点M,证明:|PF|+|PM|为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求椭圆C的方程;
(2)设P是椭圆C上的一点,过P的直线与以椭圆的短轴为直径的圆切于第一象限内的一点M,证明:|PF|+|PM|为定值.
您最近一年使用:0次
2018-01-14更新
|
909次组卷
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8卷引用:河北省迁安市2020-2021学年高二上学期期末数学试题
名校
2 . (本小题满分12分)
已知椭圆
的上、下、左、右四个顶点分别为
x轴正半轴上的某点
满足
.
![](https://img.xkw.com/dksih/QBM/2018/6/26/1975439898755072/1976521825288192/STEM/7e38c58c55404ceda77b98199fac7630.png?resizew=189)
(1)求椭圆的方程;
(2)设该椭圆的左、右焦点分别为
,点
在圆
上,且
在第一象限,过
作圆
的切线交椭圆于
,求证:△
的周长是定值.
已知椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/879975dc3b64b0241764e9d580470994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a594fcd0d9073d7607222c9e70a1a309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4c783bab7586f60dc14d4f10b6d5b12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f93dcb76698b813983b8b1ef83165d4.png)
![](https://img.xkw.com/dksih/QBM/2018/6/26/1975439898755072/1976521825288192/STEM/7e38c58c55404ceda77b98199fac7630.png?resizew=189)
(1)求椭圆的方程;
(2)设该椭圆的左、右焦点分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/278bfbb7c8cb92439a5b3ea301138655.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bcdd8c05cd04f46c6f4ba8aa3cb1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/170e2418d8cde5b0cab5eae5d009c567.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bcdd8c05cd04f46c6f4ba8aa3cb1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bcdd8c05cd04f46c6f4ba8aa3cb1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/170e2418d8cde5b0cab5eae5d009c567.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e479f5d4156048fa1d1f902cb794af9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f88015fe641ae712e76770f797f8c4c5.png)
您最近一年使用:0次
2018-01-14更新
|
536次组卷
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4卷引用:苏教版(2019) 选修第一册 突围者 第3章 第一节 课时2 椭圆的几何性质
苏教版(2019) 选修第一册 突围者 第3章 第一节 课时2 椭圆的几何性质2017-2018学年广东省仲元中学、中山一中等七校高三第二次联考理科数学(已下线)2017-2018学年度下学期高中期末备考【通用版】高二【精准复习模拟题】B【提高卷02】【文科数学】(教师版)四川省双流中学2018-2019学年高二下学期入学考试数学(文)试题
3 . 已知椭圆C:
,F1、F2分别为其左、右焦点,A1,A2分别为其长轴的左右端点,动点M满足MA2⊥A1A2,A1M交椭圆于点P,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ddab7b8aa22e1ba4c59da7dc04ac9e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09269d01ce45b25e4c52ee4a27af6206.png)
A.8 | B.16 | C.20 | D.24 |
您最近一年使用:0次
2014高三·全国·专题练习
名校
4 . 已知椭圆
的两个焦点分别为
,
,离心率为
,且过点
.
(
)求椭圆
的标准方程.
(
)
、
、
、
是椭圆
上的四个不同的点,两条都不和
轴垂直的直线
和
分别过点
,
,且这条直线互相垂直,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.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/1e501efaf72113fc8ee3d495004fa980.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.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/871dc8a502979244cb0d970ef3233976.png)
您最近一年使用:0次
2017-12-25更新
|
1654次组卷
|
8卷引用:四川省内江市威远中学2020-2021学年高二下学期期中考试数学(文)试题
四川省内江市威远中学2020-2021学年高二下学期期中考试数学(文)试题(已下线)2014年高考数学文复习二轮作业手册新课标·通用版限时集15讲练习卷北京市西城区育才中学2017-2018学年高二上学期期中考试数学(理)试题江西省赣州市十四县(市)2017-2018学年高二下学期期中联考数学(文)试题安徽省六安市第一中学2018届高三下学期第三次模拟考试数学(文)试题(已下线)2018年11月25日 《每日一题》理数人教选修2-1-每周一测(已下线)2018年11月25日 《每日一题》文数人教选修1-1-每周一测新疆实验中学2018-2019学年高二下学期开学检测数学试题
5 . 已知椭圆
上的点到两个焦点的距离之和为
,短轴长为
,直线
与椭圆C交于M、N两点.
(1)求椭圆C的方程;
(2)若直线
与圆
相切,证明:
为定值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)求椭圆C的方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23afd8a8dccf2727b54c47f9d1d633e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27935c1ef4df2d52ac697678a3c8f39d.png)
您最近一年使用:0次
2017-12-13更新
|
453次组卷
|
6卷引用:广东省揭阳市2020-2021学年高二下学期期末数学试题
名校
6 . 如图,在平面直角坐标系
中,椭圆
的焦距为
,且过点
.
![](https://img.xkw.com/dksih/QBM/2017/11/20/1821179124596736/1825564705423360/STEM/0a01c961-8ede-4636-bb7a-546d7dd3e5db.png?resizew=323)
(1)求椭圆
的方程;
(2)若点
分别是椭圆
的左右顶点,直线
经过点
且垂直于
轴,点
是椭圆上异于
的任意一点,直线
交
于点
.
①设直线
的斜率为
,直线
的斜率为
,求证:
为定值;
②设过点
垂直于
的直线为
,求证:直线
过定点,并求出定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2beb91f10d2d8f2aa0dcc3f5cd1598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a200ca2c4af794f4d1c6a5443830b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c3b9c17a6c72536ab24b1506cf61a66.png)
![](https://img.xkw.com/dksih/QBM/2017/11/20/1821179124596736/1825564705423360/STEM/0a01c961-8ede-4636-bb7a-546d7dd3e5db.png?resizew=323)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae1567d8f98fabc1a3948f8602cc5e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae1567d8f98fabc1a3948f8602cc5e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80672dda9430cb42b3136bcb1b67bbad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
①设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a0397c811fe80c80ecd5b871201987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13af018556f0b484ed38519f2edc791c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4757181824e15e0f21e5bdd55448783.png)
②设过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30513ea48bc1ef3ae78adac83d894f14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2017-11-26更新
|
1370次组卷
|
3卷引用:江苏省盐城市滨海县八滩中学2020-2021学年高二上学期期末数学试题
7 . 已知椭圆
的右顶点
,
到右焦点的距离与其到右准线的距离之比为
,
![](https://img.xkw.com/dksih/QBM/2017/11/17/1819409042612224/1821295069896704/STEM/43fbbe94b93141d1b82a4e2534bb9b42.png?resizew=178)
(1)求椭圆的方程;
(2)直线
与椭圆交于
,
两点,问
,
两点横坐标的平方和是否为定值?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://img.xkw.com/dksih/QBM/2017/11/17/1819409042612224/1821295069896704/STEM/43fbbe94b93141d1b82a4e2534bb9b42.png?resizew=178)
(1)求椭圆的方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c80e3a3b6c6513a45506f605638f5655.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
名校
8 . 已知椭圆
的离心率为
,且过点
.
(1)求椭圆
的方程;
(2)设
是椭圆
长轴上的一个动点,过点
作斜率为
的直线
交椭圆
于
两点,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/937dbb96343b8a9e52718e785e9eda43.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](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/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.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/a430c41f782c5c12f68a49c5d0cb1ee2.png)
您最近一年使用:0次
2017-11-09更新
|
1099次组卷
|
3卷引用:内蒙古赤峰市宁城县2021-2022学年高三上学期10月考数学(文)试题
名校
解题方法
9 . 已知椭圆
的离心率为
,短轴长为2.
(1)求椭圆
的标准方程;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
(2)设直线
与椭圆
交于
两点,
为坐标原点,若
,
求证:点
在定圆上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
(2)设直线
![](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/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae97f12ffe7b122062f9032f89730f14.png)
求证:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2204f5a8ebdb417438d5103914d77925.png)
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2017-09-04更新
|
3333次组卷
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15卷引用:广西柳江中学2021届高三(11月6日)一模模拟考数学文科试题
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名校
解题方法
10 . 已知椭圆
的离心率为
,长轴的一个顶点为
,短轴的一个顶点为
,
为坐标原点,且
.
(Ⅰ)求椭圆
的标准方程;
(Ⅱ)直线
与椭圆
交于
两点,且直线
不经过点
.记直线
的斜率分别为
,试探究
是否为定值.若是,请求出该定值,若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a179d4b64e0be2bfda5d9df241ec276.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d00a5df9d281dd4e1e45bf6a4d6fb27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274f07eccbd7406ec7d330389a7b5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/592b4967f670b263ea9331370bc46940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69e3f7ddd51215d00661c09cd900d60.png)
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2卷引用:北京八一学校2022届高三上学期开学考试数学试题