名校
解题方法
1 . 已知
,
是椭圆
(
)的左右焦点,
是其右顶点,过点
作直线
轴交椭圆于
,
两点,若
,则椭圆的离心率是______ .
![](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/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/165a501b2e6a3acc46212e59a166c053.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/6c24bcab3033c675dd43c66b60047c26.png)
您最近一年使用:0次
名校
解题方法
2 . 已知椭圆
:
(
)的左、右焦点分别是
,
,其离心率
,点
是椭圆
上一动点,
内切圆半径的最大值为
.
(1)求椭圆
的标准方程;
(2)直线
,
与椭圆
分别相交于点
,
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.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/d5c7316976a221c051a2c14df80b1347.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/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.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/c9c5d30bc345268d93f8a2c3e76cec1e.png)
您最近一年使用:0次
名校
解题方法
3 . 已知椭圆
:
的一个顶点为
,且离心率为
.
(1)求椭圆
的方程;
(2)设椭圆
的上顶点为
,过点
的直线与
交于
、
两点(均异于点
),试证明:直线
和
的斜率之和为定值.
![](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/7a5f1b6f209d1a805437046ca6ef79dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8833ba3833480237f47774984958c01d.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
您最近一年使用:0次
2023-01-31更新
|
454次组卷
|
2卷引用:重庆市第八中学校2021-2022学年高二(艺术班)下学期期中数学试题
名校
4 . 已知椭圆
的左右焦点分别为
,
,点P在C上且位于第一象限,圆
与线段
的延长线、线段
以及x轴均相切,
的内切圆为圆
,若圆
与圆
外切,且圆
与圆
的面积之比为
,则C的离心率为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.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/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da01a3abe1c9dc4e6283afa0dc1a0d39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae59ab252211643307830199f5b55654.png)
您最近一年使用:0次
名校
解题方法
5 . 如图,两个椭圆的方程分别为
和
,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/20/3705fd5c-0430-4f56-8c7c-85f398fa99cf.png?resizew=178)
(1)已知椭圆
的离心率
,且
,求该椭圆的方程;
(2)从大椭圆的右顶点
和上顶点
分别向小椭圆引切线
,若
的斜率之积恒为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e17571486af03786528ea2030e86fd4b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/20/3705fd5c-0430-4f56-8c7c-85f398fa99cf.png?resizew=178)
(1)已知椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/948261c41cc1509f023761d880c75582.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075ba8c6fb5ef7288cd3fed425c8e69e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23e334f7698dc3ef9251195fb1715272.png)
(2)从大椭圆的右顶点
![](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/854be43a71207548612f94b0b4f8f5ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854be43a71207548612f94b0b4f8f5ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12c4415b7792aadd1a6e148ece446aa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c6ce02259a85ea191541f4a708738f1.png)
您最近一年使用:0次
名校
解题方法
6 . 已知双曲线
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b30352c43707c4e54b94ce5b61f2e6.png)
A.双曲线![]() ![]() |
B.双曲线![]() ![]() |
C.双曲线![]() ![]() |
D.双曲线![]() ![]() |
您最近一年使用:0次
名校
解题方法
7 . 第24届冬奥会,是中国历史上第一次举办的冬季奥运会,国家体育场(鸟巢)成为北京冬奥会开、闭幕式的场馆.国家体育场“鸟巢”的钢结构鸟瞰图如图,内外两圈的钢骨架是离心率相同的椭圆,若由外层椭圆长轴一端点A和短轴一端点B分别向内层椭圆引切线AC,BD,且两切线斜率之积等于
,则椭圆的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e1bb189df5a70eaca676f99aeb5b50.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/20b0c5d2-253c-4c31-a5ec-71c2c3c8ab79.png?resizew=372)
您最近一年使用:0次
2022-12-27更新
|
1289次组卷
|
9卷引用:重庆市云阳凤鸣中学校2022-2023学年高二上学期期末数学试题
重庆市云阳凤鸣中学校2022-2023学年高二上学期期末数学试题四川省绵阳南山中学2022-2023学年高三上学期12月二诊热身考试数学(文)试题(已下线)专题11 离心率问题速解(精讲精练)-3安徽省滁州市定远县育才学校2023届高三下学期第一次模拟数学试题(已下线)情境1 关注体育赛事(已下线)专题19新文化与创新试题(已下线)专题15圆锥曲线(选填题)(已下线)模块八 专题8 以数学文化新情景为背景的压轴题黑龙江省大庆市肇州县第二中学2023届高三下学期开学考试数学试题
解题方法
8 . 如图,已知椭圆
的左、右两个焦点分别为
、
,左、右顶点分别为A、B,离心率为
,过
的动直线
与椭圆C交于M、N两点,且
的周长为8.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/7d9b9c67-5d31-42b4-b72b-721b537cbf70.png?resizew=210)
(1)求椭圆C的标准方程;
(2)若
,记
、
的面积记分别为
、
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.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/f89eef3148f2d4d09379767b4af69132.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/656690e5d6fe1b44a4983086229f34ae.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/7d9b9c67-5d31-42b4-b72b-721b537cbf70.png?resizew=210)
(1)求椭圆C的标准方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af74113f38fffeed8075e57d7f9d2533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b6260969743668e72bcbb6aab734813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/723377abda40d209ef7d7b2b44da1045.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
您最近一年使用:0次
解题方法
9 . 若椭圆
的离心率为
,则实数
的取值可能是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e61eefbeabdbbed1ffb3e57c3dd8605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.10 | B.8 | C.5 | D.4 |
您最近一年使用:0次
2022-12-18更新
|
531次组卷
|
4卷引用:重庆市好教育联盟2022-2023学年高二上学期12月调研数学试题
名校
解题方法
10 . 已知椭圆
的左焦点为
,过点
的直线
与椭圆
相交于点
(点
为椭圆
的上顶点),
为坐标原点,且
(
表示
的面积).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/f0349c86-790c-44cf-922d-a6a014102fe2.png?resizew=197)
(1)求椭圆
的离心率;
(2)设点
是椭圆
上的动点,且
面积的最大值是
,求曲线
的方程.
![](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/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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48b01d2cece2d6f5413dae670cff2601.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29aa828f2bd9a5e63ee58dcaa9d0d336.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/f0349c86-790c-44cf-922d-a6a014102fe2.png?resizew=197)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设点
![](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/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b16e62553928b52fbc6948b55293e718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次