1 . 平面直角坐标系
中,椭圆C:
(
)左,右焦点分别为
,
,且椭圆的长轴长为
,右准线方程为
.
(1)求椭圆C的方程;
(2)设直线l过椭圆C的右焦点
,且与椭圆相交与A,B(与左右顶点不重合)
(i)椭圆的右顶点为M,设
的斜率为
,
的斜率为
,求
的值;
(ii)若椭圆上存在一点D满足
,求直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.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/e82fe25db889399bb3ca4ffd5dd5db84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a61d572ecf27dc02fcbd588f24647b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dff1e33966ff01e4a394b42a3c65a400.png)
(1)求椭圆C的方程;
(2)设直线l过椭圆C的右焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a61d572ecf27dc02fcbd588f24647b1d.png)
(i)椭圆的右顶点为M,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66a5b7813e902306477f91f9f4084cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2562424a83aae7e4b3f8adf90307961a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03b58edb637c5dfa03794f3952de9d83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2bb6eabffd165f9580e9dcaaace3a89.png)
(ii)若椭圆上存在一点D满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2738e9e0593d33af7d7177c50e0036a.png)
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2 . 已知椭圆
的短轴长为
,过点
,
的直线倾斜角为
.
(1)求椭圆的方程;
(2)是否存在过点
且斜率为
的直线
,使直线
交椭圆于
两点,以
为直径的圆过点
?若存在,求出直线
的方程;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c240561788bc63f41a6703219fb66d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c09615735d331befd07664aa47cb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a12c461765806bbfb872e7e8aa410c8.png)
(1)求椭圆的方程;
(2)是否存在过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15ed90ebf0061c8a79beed307fc1719a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d776a89f4fd29dccffe1040069d59ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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解题方法
3 . 已知椭圆
的中心在坐标原点
,左顶点
,离心率
,
为右焦点,过焦点
的直线交椭圆
于
、
两点(不同于点
).
(1)求椭圆
的方程;
(2)当
的面积
时,求直线
的方程;
(3)求
的范围.
![](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/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.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/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/5963abe8f421bd99a2aaa94831a951e9.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecc3919b5000f9af77ddb77a62bee9c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a204627e498ada5be0ab6df7b6aaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b2bfb98862f33b23a35e24216e6f47.png)
您最近一年使用:0次
2020-03-05更新
|
783次组卷
|
3卷引用:河北省保定市定州市2019-2020学年高二上学期期中数学试题
河北省保定市定州市2019-2020学年高二上学期期中数学试题黑龙江省齐齐哈尔市实验中学2020-2021学年高三上学期期末数学(理科)试题(已下线)专题28 圆锥曲线求范围及最值六种类型大题100题-【千题百练】2022年新高考数学高频考点+题型专项千题百练(新高考适用)
名校
4 . 在平面直角坐标系xOy中,已知椭圆E:
(a>b>0)的离心率为
,且椭圆E的短轴的端点到焦点的距离等于2.
(1)求椭圆E的标准方程;
(2)已知A,B分别为椭圆E的左、右顶点,过x轴上一点P(异于原点)作斜率为k(k≠0)的直线l与椭圆E相交于C,D两点,且直线AC与BD相交于点Q.①若k=1,求线段CD中点横坐标的取值范围;②判断
是否为定值,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求椭圆E的标准方程;
(2)已知A,B分别为椭圆E的左、右顶点,过x轴上一点P(异于原点)作斜率为k(k≠0)的直线l与椭圆E相交于C,D两点,且直线AC与BD相交于点Q.①若k=1,求线段CD中点横坐标的取值范围;②判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a491401a0f279aca26def69f00076f.png)
您最近一年使用:0次
2020-01-29更新
|
589次组卷
|
2卷引用:湖北省武汉中学2020-2021学年高二上学期期中数学试题
名校
5 . 在平面直角坐标系xOy中,椭圆C的中心在坐标原点O,其右焦点为
,且点
在椭圆C上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/f9fc98b1-f53c-4001-baec-517acd057459.png?resizew=251)
求椭圆C的方程;
设椭圆的左、右顶点分别为A、B,M是椭圆上异于A,B的任意一点,直线MF交椭圆C于另一点N,直线MB交直线
于Q点,求证:A,N,Q三点在同一条直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/647512b057589b37838a2fe7fbb7cfc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d64a9721c833c9b7b89533f7ab47dbf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/f9fc98b1-f53c-4001-baec-517acd057459.png?resizew=251)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ef79861421b414b455a090a3ef04fef.png)
您最近一年使用:0次
2020-01-29更新
|
1463次组卷
|
8卷引用:广东省广州市华南师大附中2018-2019学年高二下期中考试理科数学试题
2020高二·浙江·专题练习
6 . 如图,已知椭圆
的左顶点为
,过右焦点
的直线交椭圆于
,
两点,直线
,
分别交直线
于点
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/76865840-dc90-4b0e-aadf-df241f58a12d.png?resizew=191)
(1)试判断以线段
为直径的圆是否过点
,并说明理由;
(2)记
,
,
的斜率分别为
,
,
,证明:
,
,
成等差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533b93dd6eb6b474481247736699c76c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdbd8a5d973b7a54b7605388fdcfbb07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/76865840-dc90-4b0e-aadf-df241f58a12d.png?resizew=191)
(1)试判断以线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.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/dbf434334b09cc0fdd4e86e84e6ceb00.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/dbf434334b09cc0fdd4e86e84e6ceb00.png)
您最近一年使用:0次
7 . 如图,在平面直角坐标系xOy中,
,
分别是椭圆
的左,右焦点,点P是椭圆E上一点,满足
轴,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/f0206cfe-8d3a-45d1-8af0-f4f0efcc7a45.png?resizew=223)
(1)求椭圆E的离心率;
(2)过点
的直线l与椭圆E交于两点A,B,若在椭圆B上存在点Q,使得四边形OAQB为平行四边形,求直线l的斜率.
![](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/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aa9a6be97b5f275d55697fd3cd0a442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46b6e8466c7299fbe94687ba5916a7be.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/f0206cfe-8d3a-45d1-8af0-f4f0efcc7a45.png?resizew=223)
(1)求椭圆E的离心率;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96d115c78edb2cc5a9446c1e8f1ec3ad.png)
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8 . 如图,已知椭圆
的左、右焦点分别为
、
,以线段
为直径的圆与椭圆交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/f2b8f33c-c78d-4d21-a40e-6acb3f53dd34.png?resizew=211)
(1)求椭圆的方程;
(2)过
轴正半轴上一点
作斜率为
的直线
.
①若
与圆和椭圆都相切,求实数
的值;
②直线
在
轴左侧交圆于
、
两点,与椭圆交于点
、
(从上到下依次为
、
、
、
),且
,求实数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.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/643ef7d761de0e794fc39937dc72ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bb24fde672f136aa564b067e7ac3229.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/f2b8f33c-c78d-4d21-a40e-6acb3f53dd34.png?resizew=211)
(1)求椭圆的方程;
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17dda982b031f09ebe66ef4d1507b0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/893d4e8d70ea2c716ac7b6c1777a77f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/2a30f3a8b673cc28bd90c50cf1a35281.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a510a3eb906b3ef0760b0d1723d11ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
9 . 已知椭圆C:
(a>b>0)的离心率为
,且经过点P(2,2).
(1)求椭圆C的方程;
(2)过点Q(1,-1)的直线与椭圆C相交于M,N两点(与点P不重合),试判断点P与以MN为直径的圆的位置关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79280809958af38e84c2600749a63624.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
(1)求椭圆C的方程;
(2)过点Q(1,-1)的直线与椭圆C相交于M,N两点(与点P不重合),试判断点P与以MN为直径的圆的位置关系,并说明理由.
您最近一年使用:0次
名校
10 . 已知椭圆
:
的左,右焦点分别为
,
,且经过点
.
(Ⅰ)求椭圆
的标准方程;
(Ⅱ)过点
作一条斜率不为
的直线
与椭圆
相交于
两点,记点
关于
轴对称的点为
.证明:直线
经过
轴上一定点
,并求出定点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17618d8d22ebb3fd6835a7eb139b4f95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13683e2ecf2164a0adbfdb9923d210a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b87b151f60a54dc8156a69b145bb866.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729a5357eba25f80b14c35a9317db5ad.png)
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您最近一年使用:0次
2019-10-29更新
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736次组卷
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2卷引用:2019年四川省成都市零模数学(文)试题