1 . 已知椭圆
的离心率
,点
在椭圆E上.
(1)求椭圆E的标准方程;
(2)直线l与椭圆E交于M,N两点,点P在椭圆E上.若四边形
为平行四边形,求证:四边形
的面积为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de85df85401e7e8da683ea4a784963c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b7533a441cd11de9f3646ecd9f0c62.png)
(1)求椭圆E的标准方程;
(2)直线l与椭圆E交于M,N两点,点P在椭圆E上.若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c40b8789cc8d81b3cf64f0b318ab982a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c40b8789cc8d81b3cf64f0b318ab982a.png)
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解题方法
2 . 已知焦距为2的椭圆
经过点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bd5f27c5f8a8cda3403c73108dfd30c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/3bcf97a3-3990-4d0b-8457-0782bcdbbc1b.png?resizew=186)
(1)求椭圆C的方程;
(2)求椭圆C的外切矩形(即矩形的四条边所在直线均与椭圆相切)ABCD的面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bd5f27c5f8a8cda3403c73108dfd30c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/3bcf97a3-3990-4d0b-8457-0782bcdbbc1b.png?resizew=186)
(1)求椭圆C的方程;
(2)求椭圆C的外切矩形(即矩形的四条边所在直线均与椭圆相切)ABCD的面积的最大值.
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解题方法
3 . 已加圆
的短轴长为2,且离心率为
.
(1)求椭圆C的方程;
(2)若过
作斜率分别为
,
的两条直线PA,PB,分别交椭圆于点A,B,且
,证明:直线AB经过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24c14ff9b66f21c05e52dc3c8908c2df.png)
(1)求椭圆C的方程;
(2)若过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1b6f209d1a805437046ca6ef79dd.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/1ae3ab048431fdc75f9a2eef2a762f37.png)
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2021-05-31更新
|
520次组卷
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2卷引用:安徽省合肥市第六中学2021届高三下学期高考考前诊断暨预测卷文科数学试题
名校
解题方法
4 . 已知离心率
,焦点在
轴上的椭圆与直线
相交于
,
两点,
为坐标原点,若
.
(1)求椭圆
的标准方程;
(2)若不经过右焦点
的直线
与椭圆
相交于
,
两点,且与圆
相切,试探究
的周长是否为定值,若是求出定值;若不是请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de85df85401e7e8da683ea4a784963c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2436951e9a6f5ca0fc0ae65b9d787119.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7df99fe6438442a9453fc0c57fb703.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若不经过右焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f827d53165b5389917cc514a019952dd.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/560adea7b0d4fbe4131fc41f3fcbd871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004104bafb5f30338123d4ea2b7fedde.png)
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2021-05-31更新
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361次组卷
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2卷引用:安徽省安庆市示范高中2021届高三下学期4月高考模拟理科数学试题
5 . 如图,
,
为椭圆
的左右焦点,
,
是椭圆的两个顶点,
,
,若点
在椭圆
上,则点
称为点
的一个“椭点”,直线
与椭圆交于
,
两点,
,
两点的“椭点”分别为
,
,已知以
为直径的圆经过坐标原点
.
![](https://img.xkw.com/dksih/QBM/2021/5/27/2730245281267712/2732030749663232/STEM/34f0ffd4-a293-4135-80a5-4ab79f967fa7.png?resizew=208)
(1)求椭圆
的标准方程;
(2)试探讨
的面积
是否为定值?若为定值,求出该定值;若不为定值,请说明理由.
![](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/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94c9e9c30cf870c91a1b7d82cb98c880.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b8b82090b4667fdc7db3e9944b2413.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22962a2ad892cb6b14ab039a06e8cdc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/915805abfac8f498563f530b9f244592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/2021/5/27/2730245281267712/2732030749663232/STEM/34f0ffd4-a293-4135-80a5-4ab79f967fa7.png?resizew=208)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)试探讨
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
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2021-05-30更新
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2卷引用:安徽师范大学附属中学2021届高三下学期5月最后一卷文科数学试题
解题方法
6 . 已知椭圆
的离心率为
,其左、右焦点分别为
,上顶点为
,且
.
(1)求椭圆
的标准方程;
(2)设
为坐标原点,点
,试判断在椭圆
上是否存在三个不同点
(其中
的纵坐标不相等),满足
,且直线
与直线
倾斜角互补?若存在,求出直线
的方程,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c38928a92bc4b44ed3c9b89769f5372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b8c45346d277a4cc59807c5263874db.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0af1a9647a129a692715564967a8ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3038b497d35c2c1a5cb09d710762a55c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88705f44316b223b3497c546943519d4.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/411461db15ee8086332c531e086c40c7.png)
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3卷引用:安徽省合肥市长丰县衡安学校2020-2021学年高二下学期第四次调研考试理科数学试题
安徽省合肥市长丰县衡安学校2020-2021学年高二下学期第四次调研考试理科数学试题重庆市九龙坡区2021届高三下学期4月二诊数学试题(已下线)考前信心增强卷(考前舒心)-2021年高考数学解答题挑战满分专项训练(新高考地区专用)
7 . 已知椭圆
的离心率为
,右顶点
,直线
与椭圆C相交于P,Q两点
(1)求椭圆C的方程.
(2)如果
,点M关于直线l的对称点N在y轴上,求k的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6b0dadb875cccce870b69409a476606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d295a4cc3a58f9f38ee98337313c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72eeed455051e355653892f1f8bbfba5.png)
(1)求椭圆C的方程.
(2)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7af3e1107e49d1f4c45ac7bf82a7a22f.png)
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2021-05-23更新
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2卷引用:安徽省皖江联盟2021届高三下学期最后一卷理科数学试题
名校
解题方法
8 . 已知椭圆
的右顶点为
,长轴长为
,
为椭圆上一点,
为坐标原点,且
重心的横坐标为
,
的面积为
.
(1)求椭圆
的方程;
(2)直线
与椭圆
交于
两点,以
为邻边作平行四边形
,且
试判断
是否为定值?若是,求出定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f02c6f05016c03cbf6f92d8807afb2d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f02c6f05016c03cbf6f92d8807afb2d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)直线
![](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/f5a5e484dfef494d27bc35ae7b8cf75d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de6c989fd224866658230526892e2bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616f7df75af49aa6682d5528dc79174a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6c953adc30e811cb8cf3ad4f60da21b.png)
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2021-05-22更新
|
449次组卷
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4卷引用:安徽省部分重点学校2021届高三下学期最后一卷文科数学试题
解题方法
9 . 已知椭圆
长轴长为6,点
和点
中有且只有一个点在椭圆
上.
(1)求椭圆
的方程;
(2)过椭圆
短轴(不包括端点)上一点
作斜率为
和
的两条直线
和
分别交椭圆
于
,
和
,
,若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e829105388311d42b94ca2c2654851de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dd314d811e4cb8e3ada524b298a55df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0df6e592e08c4f92bb1745a385042d78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)过椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fdcf7d1ba8b2a6a437ab6f1c81e8a48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69e3f7ddd51215d00661c09cd900d60.png)
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名校
10 . 设
,
分别为椭圆
的左、右焦点,
是椭圆
的短轴的一个端点,已知
的面积为
,
.
(Ⅰ)求椭圆
的标准方程;
(Ⅱ)是否存在与
平行的直线
,满足直线
与椭圆
交于两点
,
,且以线段
为直径的圆经过坐标原点?若存在,求直线
的方程;若不存在,请说明理由.
![](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/851a5d6ec23256f9b4a9e98aa92945fe.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/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/890a833ac2466c09e5afee4fc356c2e7.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)是否存在与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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您最近一年使用:0次
2021-05-12更新
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507次组卷
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3卷引用:安徽省安庆市2021届高三下学期二模理科数学试题