解题方法
1 . 设点已知点
,
,直线
,
相交于点
,且它们的斜率之积为
,
的轨迹为曲线
.
(1)求曲线
的方程;
(2)若经过点
的直线
与曲线
交于
两点,判断以
为直径的圆与直线
的位置关系,并说明理由.
![](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/b66a5b7813e902306477f91f9f4084cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78fd95f89dec2d373fa57f02acd739f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f36374ce95a4945d0e58264c2b271f.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/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
您最近一年使用:0次
名校
解题方法
2 . 已知曲线
的方程为
,则下列说法中正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd871af23fc3f4648eee952429c068b.png)
A.曲线![]() ![]() |
B.曲线![]() |
C.若动点![]() ![]() ![]() ![]() ![]() |
D.曲线![]() |
您最近一年使用:0次
解题方法
3 . 已知曲线
的离心率是
,P为其上顶点,
分别为左、右焦点,过
且垂直于
的直线与C交于
两点,
,则
的周长是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.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/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/550205cae870d82e19c1e29660bd17b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
您最近一年使用:0次
解题方法
4 . 已知圆
上的动点M在x轴上的投影为N,点C满足
.
(1)求动点C的轨迹方程C;
(2)过点
的直线l与C交于A,B两个不同点,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e6bdec0f7ba049e55f00b36c4452617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5015c9c4191fd21fa776e5d55572b9cc.png)
(1)求动点C的轨迹方程C;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f449cadb49859b80c31ef1f68bfe81b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
您最近一年使用:0次
2023-02-27更新
|
422次组卷
|
2卷引用:广东省广州市越秀区2022-2023学年高二上学期学业水平调研数学试题
解题方法
5 . 已知椭圆
的长轴长为4,离心率为
,点
为椭圆
上的一点
.
(1)求椭圆
的方程;
(2)若过原点
的直线
与椭圆
交于点
,且直线
的斜率与直线
的斜率满足
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d29c2f6aec3451b09287048c5cf03290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/e75fcf2a-2700-4469-8976-6c16110201d3.png?resizew=172)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若过原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbdb21011ea821b91d539cb763aac649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e3e8bc46d330e4f591275a8be6d12c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
您最近一年使用:0次
2022-12-03更新
|
302次组卷
|
2卷引用:广东省“深惠湛东”四校2022-2023学年高二上学期联考数学试题
名校
解题方法
6 . 在平面直角坐标系xOy中,椭圆
的左、右焦点分别为
,
,离心率为
.点P是椭圆E上的一个动点,且P在第一象限.记
的面积为S,当
时,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/cac5f8e0-9062-4e44-85d4-d9995736b0ac.png?resizew=193)
(1)求椭圆E的标准方程;
(2)如图,
,
的延长线分别交椭圆于点M,N,记
和
的面积分别为
和
.求证:存在常数λ,使得
成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.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/1174142f3bba761585b6bc2653009b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2dfb22c6f1c155747100e7536cd1abd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a87630cc4a969ccd0e4f8aeb5ff6588.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/cac5f8e0-9062-4e44-85d4-d9995736b0ac.png?resizew=193)
(1)求椭圆E的标准方程;
(2)如图,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b42fc33bcfc63ec2f4940ccd3f862400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12bdb8e9f4bd99efe2c4cdb7234b1298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2882623cba378bd66d6b7859d24c5f0f.png)
您最近一年使用:0次
2022-11-25更新
|
730次组卷
|
4卷引用:广东省广州市海珠外国语实验中学2022-2023学年高二上学期期末数学试题
7 . 已知椭圆C:
的离心率为
,短轴长为
,P为C上任意一点,
、
分别为C的左、右焦点,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
A.存在点P,使得![]() ![]() |
B.![]() ![]() |
C.C上存在4个不同的点P,使得![]() |
D.![]() ![]() |
您最近一年使用:0次
2022-11-24更新
|
718次组卷
|
3卷引用:广东省广州市四校联考2022-2023学年高二上学期期中数学试题(B卷)
2022高三·全国·专题练习
8 . 如图,中心在原点
的椭圆
的右焦点为
,长轴长为
.椭圆
上有两点
、
,连接
、
,记它们的斜率为
、
,且满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/baa6db7f-47c5-470a-b427-305483b59662.png?resizew=229)
(1)求椭圆
的标准方程;
(2)求证:
为一定值,并求出这个定值;
(3)设直线
与椭圆
的另一个交点为
,直线
和
分别与直线
交于点
、
,若
和
的面积相等,求点
的横坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/967dc76338e277e690e0e524d4179e1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.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/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/023037c7a3e31ba698c39f9b52db2515.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/157a01e29b471bbcae32d0e129a5b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f93f1438d9a45a9561fba2183ee1c1a2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/baa6db7f-47c5-470a-b427-305483b59662.png?resizew=229)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5f6c5fd93aed88bec58002a20ea2e90.png)
(3)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42af8cdea9c5269c17aebb086afdd136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1b05c3b58de848e6a33cb450fd39776.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/1c28abb154f41e1ca9816c9c9c2433ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2022-11-06更新
|
881次组卷
|
4卷引用:广东省广州市四校联考2022-2023学年高二上学期期中数学试题
广东省广州市四校联考2022-2023学年高二上学期期中数学试题(已下线)专题12平面解析几何必考题型分类训练-4四川省巴中市恩阳区2022-2023学年高二上学期期末数学试题上海市曹杨第二中学2023届高三模拟数学试题
9 . 在平面直角坐标系中,
,
两点的坐标分别为
,
,直线
,
.相交于点M且它们的斜率之积是
,记动点M的轨迹为曲线E.过点
作直线l交曲线E于P,Q两点,且点P位于x轴上方.记直线
,
的斜率分别为
,
.
(1)证明:
为定值:
(2)设点Q关于x轴的对称点为
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccc8350b12974ffc8d06fce36d158f02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a812a9b58ccba331cfd21d244329af01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9399c9a2a31b0e3165aea2d6ccc4f7c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07c2cc110e46ae4b3432814810e28bcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78fd95f89dec2d373fa57f02acd739f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ba2238d6afe0187534155dd9ac48c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e935bb9d7b7115429edbd1e7469af65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc48974114e23f5a801843710c7ae21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67351fe10fcfc3f9072eec4c60bfaaa5.png)
(2)设点Q关于x轴的对称点为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a86380a6d6501f6504dcb4aa5e3099f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c2cf4b11fe84c33c931919391e705c5.png)
您最近一年使用:0次
2022-05-25更新
|
732次组卷
|
3卷引用:广东省广州市番禺区2021-2022学年高二下学期期末数学试题
10 . 已知椭圆
的上、下焦点分别为
,
,左、右顶点分别为
,
,且四边形
是面积为8的正方形.
(1)求C的标准方程.
(2)M,N为C上且在y轴右侧的两点,
,
与
的交点为P,试问
是否为定值?若是定值,求出该定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef404abca1f78da130a38849f58559.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/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d34c0b2434f080f2187a1722f3c00b22.png)
(1)求C的标准方程.
(2)M,N为C上且在y轴右侧的两点,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a065a6949421c3f5ec559073c0503c9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/183b6a0cef4256c9696a5bca31053da5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d90a03b11a51bd7824aa4094526e5aec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bfe1cad1ce47339827ac5047af4647d.png)
您最近一年使用:0次
2022-04-21更新
|
1983次组卷
|
9卷引用:广东省阳江市2022-2023学年高二上学期期中数学试题