1 . 已知
为椭圆
的两个焦点,
为
上关于坐标原点对称的两点,且
,则
的内切圆半径为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5023d88e11dce13bd4a64de92165bcf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4df353cfa5078216d3916201e963012c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f744ab198210340a54adb2ae4a6b9b.png)
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解题方法
2 . 已知椭圆
分别是
的左,右焦点,
为
上一点,若线段
的中点在
轴上,
,则
的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d9ed1d7dbc01f6313f1e08ab8d4abee.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4304314c293095672b4c4488c2bff241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
3 . 椭圆
的左右焦点为
,
,点P为椭圆上不在坐标轴上的一点,点M,N满足
,
,若四边形
的周长等于
,则椭圆C的离心率为
( )
![](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/2b879a82946e5fdea04fbcad80ad5fa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c661d5b749980086fe99efdd8c8c44df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d231311a8897586fbb3dd68f764afe92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07fe570ddd875c9158a41091a84b485b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ce2b47812fce4b17fd813d0e4cce21.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-07-15更新
|
1504次组卷
|
4卷引用:河南省驻马店市2022-2023学年高二下学期期末数学试题
河南省驻马店市2022-2023学年高二下学期期末数学试题重庆市巴南区2024届高三诊断(一)数学试题(已下线)第五节 椭圆 第一课时 椭圆的定义、方程与性质 B素养提升卷(已下线)第05讲 椭圆及其性质(八大题型)(讲义)-2
解题方法
4 . 下列命题中正确的是( )
A.若平面内两定点![]() ![]() ![]() |
B.双曲线![]() ![]() |
C.若方程![]() ![]() ![]() |
D.过椭圆一焦点![]() ![]() ![]() ![]() |
您最近一年使用:0次
解题方法
5 . 已知椭圆
:
过点
,其焦点为
,
.
(1)求椭圆
的方程;
(2)若点
在椭圆
上,且
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ada753580438fed0612f88d79b0ad4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9b976243dd944629217f35588e5a7e7.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若点
![](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/c26ce8a486d789c2e138296b62747059.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
您最近一年使用:0次
名校
解题方法
6 . 已知椭圆
的左、右焦点分别为
,
,圆
,点P为椭圆C上一点,若
的最小值为6,则椭圆的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3152a355ff965ece63bb4bf854aeb84.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/279cf037e45b02cba9b2f895065a709f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e69e8a76f09a70cefe82a01cbaf0a84.png)
您最近一年使用:0次
2023-07-12更新
|
618次组卷
|
2卷引用:河南省安阳市滑县2022-2023学年高二下学期期末数学试题
7 . 设椭圆
的左、右焦点分别为
,
,
是
上的动点,则下列四个结论正确的个数( )
①
;
②离心率
;
③
面积的最大值为
;
④以线段
为直径的圆与直线
相切.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533b93dd6eb6b474481247736699c76c.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/c5db41a1f31d6baee7c69990811edb9f.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85f5864c589f96fae832f7de03539d3b.png)
②离心率
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de85df85401e7e8da683ea4a784963c.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
④以线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643ef7d761de0e794fc39937dc72ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f8290bea6988057f4ff3522007af4e2.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
2023-07-12更新
|
757次组卷
|
3卷引用:四川省自贡市2022-2023学年高二下学期期末考试数学(文)试题
四川省自贡市2022-2023学年高二下学期期末考试数学(文)试题四川省自贡市2022-2023学年高二下学期期末考试数学(理)试题(已下线)模块一 专题4 圆锥曲线 期末终极研习室(2023-2024学年第一学期)高二人教A版
8 . 在三棱锥
中,
,
,设三棱锥
的体积为
,直线
与平面
所成的角为
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.若直线![]() ![]() ![]() ![]() ![]() ![]() ![]() |
D.若直线![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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解题方法
9 . 已知椭圆
的右焦点为
,过原点的直线
与
交于
两点,若
,且
,则
的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c507610f462120218e2cd1894c957eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f8f333303816ff66e3aa44bcf97268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-07-05更新
|
1489次组卷
|
4卷引用:广东省深圳市2022-2023学年高二下学期期末数学试题
广东省深圳市2022-2023学年高二下学期期末数学试题(已下线)第20讲 椭圆的简单几何性质10种常见考法归类(1)(已下线)第02讲 3.1.2椭圆的简单几何性质(1)江苏省2024届高三上学期仿真模拟考试(二)数学试题
名校
解题方法
10 . 已知椭圆
,过左焦点
作直线l在x轴上方交椭圆于点A,过右焦点
作直线
交直线l于点B(B在椭圆外),若
为正三角形,则椭圆的离心率为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.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/b8a454588e9beb97c69a0332a7c5c796.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5eb2485f90dbfd0dfd6e7d179a856f5.png)
您最近一年使用:0次