名校
解题方法
1 . 已知点A,B是椭圆
的左,右顶点,椭圆E的短轴长为2,离心率为
.
(1)求椭圆E的方程;
(2)点O是坐标原点,直线l经过点
,并且与椭圆E交于点M,N,直线
与直线
交于点T,设直线
,
的斜率分别为
,
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a200ca2c4af794f4d1c6a5443830b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求椭圆E的方程;
(2)点O是坐标原点,直线l经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3263811a06227abf213822c14a314dc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b1ec05e3cec27677ded7b4aecaa62d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.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/b4757181824e15e0f21e5bdd55448783.png)
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2 . 已知椭圆
的焦距和半长轴长都为2.过椭圆C的右焦点F作斜率为
的直线l与椭圆C相交于P,Q两点.
(1)求椭圆C的方程;
(2)设点A是椭圆C的左顶点,直线AP,AQ分别与直线
相交于点M,N.求证:以MN为直径的圆恒过点F.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2799abb64fd7bfce9dfa7228aa460564.png)
(1)求椭圆C的方程;
(2)设点A是椭圆C的左顶点,直线AP,AQ分别与直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
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解题方法
3 . 已知椭圆
经过
两点,设过点
的直线椭圆交E于M,N两点,过M且平行于y轴的直线与线段AB交于点T,点H满足
.
(1)求椭圆E的方程:
(2)证明:直线HN过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edf88cfd8db3ad25ed1ea8faad8ed1a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3178e2296170fb2ba5ed2c016a1edc80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84594e725612627ce035c87451ba3ae5.png)
(1)求椭圆E的方程:
(2)证明:直线HN过定点.
您最近一年使用:0次
2023-03-09更新
|
1099次组卷
|
4卷引用:北京市平谷区2023届高三一模数学试题
名校
解题方法
4 . 已知椭圆
的长轴长为
,且过点
.
(1)求C的方程和离心率;
(2)过点
与作直线l交椭圆C于点D、E(不与点A重合).
是否为定值?若是,求出该定值,若不是,求其取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c59f0e35b7ae5206e45878934482b8.png)
(1)求C的方程和离心率;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03a9e0691a845ad6100074b5c06946fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e7106619c08f2bcc1d21f846e8a0de.png)
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2023-03-07更新
|
647次组卷
|
2卷引用:北京市人大附2023届高三下学期开学考数学试题
22-23高三下·北京海淀·开学考试
名校
解题方法
5 . 已知椭圆
过点
,长轴长为
.
(1)求椭圆
的方程;
(2)直线
与椭圆交于点
,直线
分别交直线
于点
,
为坐标原点.若
,求证:直线
经过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfaba0309c471a4246ca3254a3cdaf17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc5bd66dd6d5e09ff0893a938aed56e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d42cb68c5c877a455ba7ac0a6b6a651.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a089c207e39a24d0d82aa853ac2bbb8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/030c0325fde242e06cee8d270ba89d68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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解题方法
6 . 已知椭圆
的焦点在
轴上,且离心率为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求实数
的值和椭圆
的方程;
(2)若垂足为点
的相互垂直的两条直线
均与椭圆
相切.求证:点
在一个圆上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf98fe4230feb9db9c16dac2ee4d571a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若垂足为点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532af83c6a8d570fbabd4dfa2c5c227b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
名校
解题方法
7 . 已知椭圆
过点
,其右焦点为
.
(1)求椭圆
的方程;
(2)设
为椭圆
上一动点(不在
轴上),
为
中点,过原点
作
的平行线,与直线
交于点
.问
能否为定值,使得
?若是定值,求出该
值;若不是定值,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04fe143c6e80035fb7dbe4a11f37c62c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd99c5000629d7f49499d666e68f40d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ba2238d6afe0187534155dd9ac48c6.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec0a65545cd9a9b316acc9774231778.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a8f059cee4a9f56ede2932d5364b099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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2023-02-18更新
|
724次组卷
|
4卷引用:北京市八一学校2023届高三下学期2月开学测试数学试题
8 . 已知椭圆
的焦点坐标为
,若直线l与椭圆
相切,点
到直线l的距离分别为
.证明:
(1)
.
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe6c4c8fffd4c5b21f1d11b26963fcf.png)
(3)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0c118b51ab426bc1c1b56179094f146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/475a3fdc7b27d5ffa8c864dc478903d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf2f1c1409a06278e847e6b573cef254.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58fc0e502b29162d63e46d46220cce8e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe6c4c8fffd4c5b21f1d11b26963fcf.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8acbfb924b9d207b057fc6593ffeb9d9.png)
您最近一年使用:0次
解题方法
9 . 已知椭圆
的离心率为
,以椭圆
的任意三个顶点为顶点的三角形的面积是
.
(1)求椭圆
的方程;
(2)设
为原点,A为椭圆的左顶点,
是椭圆
上不同于点A的两点,且直线
的斜率之积等于
.求
与
的面积比值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/026ca45306da00dc5fbc68ba8b948c2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.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/d1ae7f4ebfe198f1ec98e919e1368624.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/983ca52d39248840ec0120d1a64dfab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602baac86c2b1668ecdfadc8a5948885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/323eb2e41f461ac655012a986d5a27bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
您最近一年使用:0次
10 . 已知椭圆
经过点
,离心率为
.
(1)求椭圆C的方程;
(2)设直线
与椭圆C相交于A,B两点,O为坐标原点.若以
为邻边的平行四边形
的顶点P在椭圆C上,求证:平行四边形
的面积是定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe8530b8e246a9a5ec9fe3b9c347d5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(1)求椭圆C的方程;
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f3c8bff78931350f73e15cc10995cc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a5e484dfef494d27bc35ae7b8cf75d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14e902eb263971b466d0fcd91c56b453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14e902eb263971b466d0fcd91c56b453.png)
您最近一年使用:0次