名校
解题方法
1 . 已知椭圆
过点
且离心率为
.
(1)求椭圆
的标准方程;
(2)若椭圆
上存在三个不同的点
,满足
,求四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0468521368650a5846a901eaf5400798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/999bcbd024bec7b4a2596e8db4538ae3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6eb636460c08f94a3f7aa08dc4870f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14e902eb263971b466d0fcd91c56b453.png)
您最近一年使用:0次
2020-04-09更新
|
541次组卷
|
3卷引用:河北省邯郸市2019-2020学年高三下学期空中课堂备考检测数学(文)试题
解题方法
2 . 离心率为
的椭圆
经过点
,
是坐标原点.
(1)求椭圆
的方程;
(2)是否存在圆心在原点的圆,使得该圆的任意一条切线与椭圆
恒有两个交点
,且
?若存在,求出该圆的方程,并求
的取值范围;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0bea681006f614f8a070e9c6a942c04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)是否存在圆心在原点的圆,使得该圆的任意一条切线与椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bfe4da6f357e55927d25d9d27ea8717.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaff41080fdea43eea7efedf9ebc1498.png)
您最近一年使用:0次
名校
解题方法
3 . 若圆
与椭圆
有且只有三个交点
,且
是等边三角形,则该椭圆的离心率的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d04676a66ccb0463951f3934cc4e04b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1542c48f287494f0c5f70a5c9eb6bfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
您最近一年使用:0次
4 . 已知椭圆
过点
,
为
内一点,过点
的直线
交椭圆
于
、
两点,
,
为坐标原点,当
时,
.
(1)求椭圆
的方程;
(2)求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a812a9b58ccba331cfd21d244329af01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f449cadb49859b80c31ef1f68bfe81b.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/0f85fca60a11e1af2bf50138d0e3fe62.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f2d7479433c7111ed66a7858b99139.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/243c853053ddabb76f21572dcda41e66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/000cb4ce44ee3d5426436390b1a5fa69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a944e0cbc23f379deb41c0188fe5ff.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
名校
解题方法
5 . 已知椭圆
的右焦点为
,且椭圆过点
.
(1)求椭圆的标准方程;
(2)过椭圆C的右焦点
作直线l交椭圆C于A,B两点,交y轴于M,若
(
为
的面积,
为
的面积),
,问
为定值吗?若为定值求出此定值,并证明你的结论,若不为定值说出你的理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63309dbc3612815f6dbdee23d9a10adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177be4e698c3ffce382f1673601ad0ec.png)
(1)求椭圆的标准方程;
(2)过椭圆C的右焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63309dbc3612815f6dbdee23d9a10adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8447bab6f10b44c32147063bb273227f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28a3365932ac311b9fa4b126c255a0a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca44b73ce162458f9a9d0c9d3902cb53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83285c63172fab27a823860cc3cde7f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e55b85a1dc91ee8a026ad44e82d42b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dd23993435237661644bc07b1192a10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69e3f7ddd51215d00661c09cd900d60.png)
您最近一年使用:0次
6 . 已知椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5563df225901b03c51b139684de04bd1.png)
,点
为椭圆上的点,长轴
,
,
为椭圆的上,下顶点,直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c80e3a3b6c6513a45506f605638f5655.png)
交椭圆于
,
(点
在点
左侧,且
与
不重合).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/3a7b9b23-e365-4342-bab1-51dab215a121.png?resizew=199)
(1)求证:直线
,
的倾斜角互补;
(2)记
的斜率为
,
的斜率为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5563df225901b03c51b139684de04bd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f82eb4ba631d0f50d848aa6e576b379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/480f004c98a0df86a35a48bc973f0472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c80e3a3b6c6513a45506f605638f5655.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/877f829930fc5080200d0c209c601f09.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/3a7b9b23-e365-4342-bab1-51dab215a121.png?resizew=199)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884b508394b3ab50734b584d9ec783c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e0a8cfb3747c454e0698e12857ffae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67351fe10fcfc3f9072eec4c60bfaaa5.png)
您最近一年使用:0次
解题方法
7 . 如图,
分别为椭圆
的左、右焦点,O为坐标原点,
.椭圆E经过点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/b01b9e43-ab71-4030-be66-7c3d8b97c045.png?resizew=179)
(1)求椭圆E的方程;
(2)若B、C是椭圆E上两个动点,直线
的斜率与直线
的斜率互为相反数,证明:直线
的斜率为定值,并求出这个定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c38928a92bc4b44ed3c9b89769f5372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092bf5de87dbf70ca4e58ebf68c6ae68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e90064d012356de1877aa697cd6d6ac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/b01b9e43-ab71-4030-be66-7c3d8b97c045.png?resizew=179)
(1)求椭圆E的方程;
(2)若B、C是椭圆E上两个动点,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次
8 . 已知椭圆C的中心在坐标原点,经过两点
和
.
(1)求椭圆的方程;
(2)过点
的直线l与椭圆交于AB两点,满足
,求直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bacfc149ede71417fa599c21b5a84cb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03efa0031095d2186f68e407859eb37d.png)
(1)求椭圆的方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1b6f209d1a805437046ca6ef79dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e08e7b2bb87f2f1056699b06a3be61d6.png)
您最近一年使用:0次
名校
解题方法
9 . 已知椭圆
的离心率为
,且经过点
.
(1)求椭圆
的方程.
(2)过定点
的直线与椭圆
交于两点
.
(线不经过点
),直线
,
的斜率为
,
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/480f004c98a0df86a35a48bc973f0472.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffcb1b4fa4aaf3c673cbae94f7c94a89.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/dad2a36927223bd70f426ba06aea4b45.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/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69e3f7ddd51215d00661c09cd900d60.png)
您最近一年使用:0次
2020-03-18更新
|
531次组卷
|
6卷引用:贵州省六盘水市六枝特区七中2018-2019学年高二上学期期末考试数学试题
解题方法
10 . 在平面直角坐标系xOy内,点(
)在椭圆E:
(a>0,b>0),椭圆E的离心率为
,直线l过左焦点F且与椭圆E交于A、B两点
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/276d037e-66d9-42d4-865f-920721639c0b.png?resizew=183)
(1)求椭圆E的标准方程;
(2)若动直线l与x轴不重合,在x轴上是否存在定点P,使得PF始终平分∠APB?若存在,请求出点P的坐标:若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb3dbec3b83d19038944f018b956cc8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f392d61933568d27a27568c6298365bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f78c38805c09dcfbcc42103308975a74.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/276d037e-66d9-42d4-865f-920721639c0b.png?resizew=183)
(1)求椭圆E的标准方程;
(2)若动直线l与x轴不重合,在x轴上是否存在定点P,使得PF始终平分∠APB?若存在,请求出点P的坐标:若不存在,请说明理由.
您最近一年使用:0次