解题方法
1 . 在椭圆
:
(
)中,其所有外切矩形的顶点在一个定圆
:
上,称此圆为椭圆的蒙日圆.椭圆
过
,
.
(1)求椭圆
的方程;
(2)过椭圆
的蒙日圆上一点
,作椭圆的一条切线,与蒙日圆交于另一点
,若
,
存在,证明:
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/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833bf16f0161259e9d973dbdd5c6b18c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e641014eb998f16c14ee0ec59f9d54f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1d3761cd40cc542025e520d5d813d76.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/80065003fe6677e9a6b4f0dfb9d1db0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e4f28029c21c82a381a782e4b16fcbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57c240a5e281eb282e3d596a446c9544.png)
您最近一年使用:0次
解题方法
2 . 如图,椭圆
的左、右顶点分别为A,B.左、右焦点分别为
,
,离心率为
,点
在椭圆C上.
(1)求椭圆C的方程;
(2)已知P,Q是椭圆C上两动点,记直线AP的斜率为
,直线BQ的斜率为
,
.过点B作直线PQ的垂线,垂足为H.问:在平面内是否存在定点T,使得
为定值,若存在,求出点T的坐标;若不存在,试说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.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/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83e6a574b9fa0d4eaa2619d99ee3da9c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/31/40178d00-a90c-4382-877d-4ec967fe7e0d.png?resizew=221)
(1)求椭圆C的方程;
(2)已知P,Q是椭圆C上两动点,记直线AP的斜率为
![](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/5b6286bad689739bba255aa7c3c06321.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dceda95128aa56b0af3c86dfe7a43163.png)
您最近一年使用:0次
2023-07-27更新
|
816次组卷
|
6卷引用:河南省商丘市等2地2023届高三三模数学(理)试题
河南省商丘市等2地2023届高三三模数学(理)试题河南省商丘市等2地2023届高三三模文科数学试题河北省秦皇岛市青龙满族自治县青龙实验中学联考2023届高三冲刺卷(三)数学试题(已下线)重难点突破11 圆锥曲线存在性问题的探究(五大题型)(已下线)专题11 平面解析几何-4(已下线)专题15 圆锥曲线综合
名校
解题方法
3 . 已知椭圆
的长轴长与短半轴长之比为
,且点
在椭圆C上.
(1)求椭圆C的方程;
(2)直线
与x轴,椭圆C依次相交于
三点,点M为线段
上的一点,若
,求
(O为坐标原点)面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8c3c738a7717513105839240bf59a09.png)
(1)求椭圆C的方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a00bc275f025db674857c64d17a3de46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e8ec66d29e434a5eb44f03c58683354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d052022c006994f281414c331d0e1e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c693731f073a4f21f0c92a3b610804f4.png)
您最近一年使用:0次
2023-06-22更新
|
529次组卷
|
5卷引用:河南省郑州市等3地2022-2023学年高三下学期6月冲刺卷(五)全国卷理科数学试题
4 . 有一个半径为4的圆形纸片,设纸片上一定点
到纸片圆心
的距离为
,将纸片折叠,使圆周上一点M与点F重合,以点F,E所在的直线为x轴,线段EF中点为原点O,建立平面直角坐标系.
(1)记折痕与ME的交点P的轨迹为曲线C,求曲线C的方程.
(2)若直线
与曲线C交于A,B两点.
(ⅰ)当k为何值时,
为常数d,并求出d的值.
(ⅱ)以A,B为切点,作曲线C的两条切线,设其交点为Q,当
时,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
(1)记折痕与ME的交点P的轨迹为曲线C,求曲线C的方程.
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71a11a6557746896f12fbeaa4540ee45.png)
(ⅰ)当k为何值时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17a0d9a2f14f7e789892487d6585804a.png)
(ⅱ)以A,B为切点,作曲线C的两条切线,设其交点为Q,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66f0a70c1715848c8ea4fe4cedd8648c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4021a6a6fff938323b06fd71c50c8930.png)
您最近一年使用:0次
解题方法
5 . 已知椭圆
的离心率与双曲线
的离心率互为倒数,椭圆
的短轴长为2,点
是左,右顶点.
(1)求椭圆
的方程;
(2)点
是坐标原点,直线
经过点
,并且与椭圆
交于
直线
与直线
交于点
,设直线
的斜率分别为
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a218602e8e3a52f74f760059aa7014.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3263811a06227abf213822c14a314dc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e88f79da28a2878b27e3742dc8c92fd8.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/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e89cf47f88ea5f8ddce19f51e98e97af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b881044b5c73db6fcce110525741b02.png)
您最近一年使用:0次
名校
6 . 已知椭圆
的离心率为
,直线
与E交于A,B两点,当
为双曲线
的一条渐近线时,A到y轴的距离为
.
(1)求E的方程;
(2)若过B作x轴的垂线,垂足为H,OH的中点为N(O为坐标原点),连接AN并延长交E于点P,直线PB的斜率为
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a200ca2c4af794f4d1c6a5443830b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/789bf265c5d1af375c83d043ec65298c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d79a9d7c59c061259eba07baded4941.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38be38165dc2307982fc57001a447c56.png)
(1)求E的方程;
(2)若过B作x轴的垂线,垂足为H,OH的中点为N(O为坐标原点),连接AN并延长交E于点P,直线PB的斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b3fbcd952073f38340769b8fbca5b23.png)
您最近一年使用:0次
2023-05-26更新
|
639次组卷
|
7卷引用:河南省郑州市九师联盟2023届高三考前预测押题理科数学试题
名校
解题方法
7 . 已知椭圆
过点
,且离心率为
.
(1)求椭圆C的标准方程;
(2)若直线
与椭圆C交y轴右侧于不同的两点A,B,试问:
的内心是否在一条定直线上?若是,请求出该直线方程;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cba824597ac1256ef641fb87346dda6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d307161f8f5b4353f267bf398caef8f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(1)求椭圆C的标准方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d00a5df9d281dd4e1e45bf6a4d6fb27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a11cb104b04c4e6a1be700e81da279a.png)
您最近一年使用:0次
2023-05-19更新
|
594次组卷
|
4卷引用:河南省新未来2023届高三5月联考文科数学试题
名校
解题方法
8 . 已知椭圆
:
的左、右顶点分别为
,
,M是椭圆R上异于A,B的一点,且直线MA与直线MB的斜率之积满足
.
(1)求椭圆R的标准方程;
(2)过点
的直线交椭圆于C,D两点,且直线AC,BD交于点Q,求点Q的横坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c850811ba59a05e945a665196539a048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1658e5d429f07818fe38e4fb0b43bf3a.png)
(1)求椭圆R的标准方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
您最近一年使用:0次
2023-05-19更新
|
506次组卷
|
5卷引用:河南省青桐鸣大联考2023届高三下学期5月考试文科数学试题
解题方法
9 . 已知椭圆
的右焦点为
,且
是椭圆
上一点.
(1)求椭圆
的方程;
(2)若过
且斜率不为0的直线
与椭圆
相交于
两点,若
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be92f0e0012a7696c78e3e00513edefd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dc486cdfb2ad3d27d8f2672a5f2f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若过
![](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/56f5090d910284f5b66a70364a675e10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2023-05-09更新
|
388次组卷
|
2卷引用:河南省豫南名校毕业班2023届高三仿真测试三模文科数学试题
解题方法
10 . 已知椭圆
的右焦点为
,且
是椭圆
上一点.
(1)求椭圆
的方程;
(2)若过
的直线
(与
轴不重合)与椭圆
相交于
两点,过
的直线
与
轴交于点
,与直线
交于点
(
与
不重合),记
的面积分别为
,若
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be92f0e0012a7696c78e3e00513edefd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dc486cdfb2ad3d27d8f2672a5f2f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/bd1c0dda66d5b9b940b08b2c7501daf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/765def622d9ab7d1eb806ed0f8ebe2fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a838f4f94912a7b82b2954d0ce3143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
您最近一年使用:0次
2023-05-08更新
|
934次组卷
|
5卷引用:河南省豫南名校毕业班2023届高三仿真测试三模理科数学试题