1 . 在平面直角坐标系
中,已知椭圆
的离心率为
,且椭圆
短轴的一个顶点到左焦点
的距离等于
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/7b121abd-0a84-4905-aed8-dd148b0b6048.png?resizew=235)
(1)求椭圆
的方程;
(2)设经过点
的直线
交椭圆
于
两点,弦
的中垂线
交
轴于点
.
①求实数
的取值范围;
②若
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/7b121abd-0a84-4905-aed8-dd148b0b6048.png?resizew=235)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bacfc149ede71417fa599c21b5a84cb8.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2da6ef88591589f330304297d3abfcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f4ea4bc4c655fd337f8bdd18c493b5.png)
①求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12c7613bc5c3fc3d8d20b8652fedc736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
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2 . 椭圆
的左、右焦点分别是
,离心率为
,过
且垂直于
轴的直线被椭圆
截得的线段长为1.
(1)求椭圆
的方程;
(2)设直线
是以坐标原点
为圆心,
为半径的圆的切线,且与椭圆
交于不同的两点
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc5bd66dd6d5e09ff0893a938aed56e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9868f77d5ab5073b6145f1c6d272122e.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/9fd2981bf2261343f905ec1b5355a3c4.png)
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解题方法
3 . 已知椭圆
的长轴为
,
分别为椭圆C的左、右顶点,P是椭圆C上异于
的动点,且
面积的最大值为
.
(1)求椭圆C的方程;
(2)过点
的直线l交椭圆C于
两点,D为椭圆上一点,O为坐标原点,且满足
,其中
,求直线l的斜率k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6d7dd733fe8e8d7bdbe1b8190cfdf47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
(1)求椭圆C的方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c441c7e1d4bc397894cc8a6a169e0d58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb758a372282ae159a7c378473c2d709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f509622449887f04d15373c5ee927847.png)
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2020-02-27更新
|
540次组卷
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3卷引用:2019届云南省玉溪市高三上学期教学质量检测数学(文)试题
4 . 已知椭圆
的离心率为
,点
是椭圆上的一个动点,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a88c7af934e8ed88dee1c7037520ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de85df85401e7e8da683ea4a784963c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf99adccc80f28343fedd8d0aad7429.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-02-24更新
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3卷引用:重庆市育才中学2018-2019学年高二下学期4月月考(文科)数学试题
名校
5 . 设椭圆
的左、右焦点分别为
,左顶点为A,左焦点到左顶点的距离为1,离心率为
.
(1)求椭圆M的方程;
(2)过点A作斜率为k的直线与椭圆M交于另一点B,连接
并延长交椭圆M于点C.若
,求k的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cf6cca367ce2afd96d7d951f9587e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c38928a92bc4b44ed3c9b89769f5372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求椭圆M的方程;
(2)过点A作斜率为k的直线与椭圆M交于另一点B,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3656055f5256cd06e636ea96e9f89c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/040ad5576ebe1b6940dc7932395576dc.png)
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2020-02-11更新
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4卷引用:2020届天津市耀华中学高三数学上学期第一次月考数学试题
名校
6 . 已知椭圆
的离心率为
,
分别为椭圆的左右焦点,
为椭圆短轴的一个端点,
的面积为
.
(1)求椭圆的方程;
(2)若
是椭圆上异于顶点的四个点
与
相交于点
,且
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee82fb4503498e264a1f18b791610e46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
(1)求椭圆的方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c82a10b4f0c9323d726804c89dd9548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a987a87550f46d1fa1fa286f68216ec9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1227fb5b1bbd351e710ddd72fd03ca.png)
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2020-02-09更新
|
685次组卷
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5卷引用:2020届天津市第一中学高三上学期第二次月考数学试题
2020届天津市第一中学高三上学期第二次月考数学试题天津市静海区大邱庄中学2020届高三下学期第一次月考数学试题(已下线)2020届天津市北辰区高三第一次诊断测试数学试题(已下线)专题06 平面向量在解析几何中的应用(第五篇)-2020高考数学压轴题命题区间探究与突破(已下线)专题18 圆锥曲线(解答题)-2020年高考数学母题题源解密(天津专版)
7 . 已知直线l:
与椭圆
:
(
)交于A、B两点,与圆
:
交于C、D两点.若存在
,使得
,则椭圆
的离心率的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac5eb4ab23594c8fb12368c7730cea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.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/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2a03b95dac0a222906677188f9ef1fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdce5575f51e6093b01f6d533b7341d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f31bee6e45a168d09177758ae4c589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
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2020-01-17更新
|
1078次组卷
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3卷引用:湖南省郴州市2019-2020学年高三第一次教学质量监测(12月) 数学(理)试题
湖南省郴州市2019-2020学年高三第一次教学质量监测(12月) 数学(理)试题河南省濮阳市2019-2020学年高二下学期升级考试(期末)数学(理)试题(已下线)第3章 圆锥曲线与方程 单元综合检测(基础过关)(单元培优)-2021-2022学年高二数学课后培优练(苏教版2019选择性必修第一册)
名校
8 . 以椭圆
的中心O为圆心,以
为半径的圆称为该椭圆的“伴随”.已知椭圆的离心率为
,且过点
.
(1)求椭圆C及其“伴随”的方程;
(2)过点
作“伴随”的切线l交椭圆C于A,B两点,记
为坐标原点)的面积为
,将
表示为m的函数,并求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a1a757dc2ea59fd399383df9fe43c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e43e017aa47c1ee34f5b316d6294ee18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9c6fe12d3a9727e00ef87a630302ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45320dcdaf9d7108928652d31f648b4e.png)
(1)求椭圆C及其“伴随”的方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ac8cdda4f66904b6e2676689c40dbde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb1031541025fe282f46ff95b1027c6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc66278e55cefbb7749c0d37a7fd6f1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc66278e55cefbb7749c0d37a7fd6f1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc66278e55cefbb7749c0d37a7fd6f1e.png)
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2019-12-01更新
|
888次组卷
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4卷引用:安徽省太和中学2022-2023学年高二下学期选修模块检测数学试题
9 . 已知椭圆
,
是它的上顶点,点
各不相同且均在椭圆上.
(1)若
恰为椭圆长轴的两个端点,求
的面积;
(2)若
,求证:直线
过一定点;
(3)若
,
的外接圆半径为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b86ca1b7a031911aedefbea24fe7a4b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9195bc5917cc0dcef221f17561d1cdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b4d56a37c002c1a0307a7763a20605.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5296ad582dbea07ef722f1b9b01a2abe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839594b48d5ff3bf74ed9d5a2792b13a.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fba73132ba836e51d315bef6cdd6243.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f6f078fc07cd742b8ecd6ae448bc7e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15526f7c892333030073b85fc3baee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9b76b20753e31796708f2eca9acb869.png)
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2019-11-14更新
|
448次组卷
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3卷引用:上海市宜川中学2018-2019学年高三上学期12月月考数学试题
名校
10 . 已知椭圆
上两个不同的点
、
关于直线
对称.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/bc1655c6-c3fe-4726-bbf8-bbff59ba01f4.png?resizew=207)
(1)若已知
,
为椭圆上动点,证明:
;
(2)求实数
的取值范围;
(3)求
面积的最大值(
为坐标原点).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271e595c257e4c0ade90a9bbbf0e6b0d.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/b0cad1e0d712019c6bd59460dfdaa94c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/bc1655c6-c3fe-4726-bbf8-bbff59ba01f4.png?resizew=207)
(1)若已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdecdbcf310eecf9a369b549703981b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ba81f1a74bab4766faf309e35039ad1.png)
(2)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd2981bf2261343f905ec1b5355a3c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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2019-11-07更新
|
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