1 . 已知椭圆
的离心率为
,左、右焦点分别是
,以
为圆心、3为半径的圆与以
为圆心、1为半径的圆相交,交点在椭圆C上.
(1)求椭圆C的方程;
(2)直线
与椭圆C交于A,B两点,点M是椭圆C的右顶点
直线AM与直线BM分别与y轴交于点PQ,试问以线段PQ为直径的圆是否过x轴上的定点?若是,求出定点坐标;若不是,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/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
(1)求椭圆C的方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1716e55292e5807e1db61d00b4150b.png)
![](https://img.xkw.com/dksih/QBM/2018/12/27/2105843037110272/2106740105494528/STEM/befdf51b083f44ae8cc5f5f480c4b589.png?resizew=4)
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名校
2 . 如图,设
是椭圆
的左焦点,点
是
轴上的一点,点
为椭圆的左、右顶点,已知
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2b6fc43377f63660a6b47a9ba6179c.png)
![](https://img.xkw.com/dksih/QBM/2018/12/24/2103704515796992/2104620173885440/STEM/af31c0eab7cf4ab18b6fd90a263b5e91.png?resizew=151)
(1)求椭圆的标准方程;
(2)过点
作直线
交椭圆于
两点,试判定直线
的斜率之和
是否为定值,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04add41d4f548a8cca7e06703c8f2d64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9fe1e0328f7ecdc9570df5198eaabc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9602114f45bdcb304e02710ae7bc0e08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2b6fc43377f63660a6b47a9ba6179c.png)
![](https://img.xkw.com/dksih/QBM/2018/12/24/2103704515796992/2104620173885440/STEM/af31c0eab7cf4ab18b6fd90a263b5e91.png?resizew=151)
(1)求椭圆的标准方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7471451108cf5d0fbb66e8819759a6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9e28f263afbc9356490106f23d0e286.png)
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3 . 过椭圆
的右焦点F作两条相互垂直的直线分别交椭圆于A,B,C,D四点,则
的值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/623567de59e50e4066c20804e9168ca9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e90ac32dc4a5368c94dda5416b076d0.png)
A.![]() | B.![]() | C.1 | D.![]() |
您最近一年使用:0次
2018-12-19更新
|
3266次组卷
|
5卷引用:江西省抚州市南城县第二中学2019-2020学年高二下学期开学考试数学(理)试题
江西省抚州市南城县第二中学2019-2020学年高二下学期开学考试数学(理)试题【全国百强校】甘肃省兰州第一中学2018-2019学年高二12月月考数学(文)试题(已下线)专题10 焦半径公式的应用 微点2 焦半径公式的应用综合训练(已下线)专题9 圆锥曲线第二定义的应用 微点3 圆锥曲线第二定义的应用综合训练(已下线)重难专攻(九)?圆锥曲线中的定值问题 讲
名校
4 . 已知椭圆
的离心率为
,若椭圆与圆
:
相交于M,N两点,且圆E在椭圆内的弧长为
.
(1)求椭圆的方程;
(2)过椭圆的上焦点作两条相互垂直的直线,分别交椭圆于A,B、C,D,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c9bebea391a1f9956dfcca98d9d1f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54c0fee20828d2f2acea134e270a6f37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44917f942c3fd36614f58d47b5fe1821.png)
(1)求椭圆的方程;
(2)过椭圆的上焦点作两条相互垂直的直线,分别交椭圆于A,B、C,D,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c888eba416ceca9d0b82e8cae3017846.png)
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名校
5 . 已知椭圆C的方程为
,P
在椭圆上,椭圆的左顶点为A,左、右焦点分别为
,
的面积是
的面积的
倍.
(1)求椭圆C的方程;(2)直线
与椭圆C交于M,N,连接
并延长交椭圆C于D,E,连接DE,指出
与
之间的关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/948261c41cc1509f023761d880c75582.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe8530b8e246a9a5ec9fe3b9c347d5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de64057a1dea51f4ee01d5baf120c673.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78f7af0a9c625c87e1e06994b8c2d10e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34e01955f8c8fe2f0041b35d8d602a7.png)
(1)求椭圆C的方程;(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19e2b6466242aec6c1ff38f83eb66314.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8deeb0052e7f6104be92ee57e66a320e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b68a3fb2b06f0c78c274b71cdef2414d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
6 . 已知点
在椭圆
上,设
分别为椭圆的左顶点、下顶点,原点
到直线
的距离为
.
(Ⅰ)求椭圆
的方程;
(Ⅱ)设
为椭圆
在第一象限内一点,直线
分别交
轴、
轴于
两点,求四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de261e9b4defbc0be6440397031a87b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be0a31202a7a69d530c05a75229e6ea6.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(Ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d240ea67c239b0d9213448c11cba18c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2018-08-29更新
|
558次组卷
|
2卷引用:江西省南昌市2017-2018学年高三第二轮复习测试理科数学试题
7 . 已知椭圆
:
的离心率为
,
,
为其左、右顶点,
为椭圆上除
,
外任意一点,若记直线
,
斜率分别为
,
.
(1)求证:
为定值;
(2)若椭圆
的长轴长为4,过点
作两条互相垂直的直线
,
,若
恰好为
与椭圆相交的弦的中点,求
与椭圆相交的弦的中点的横坐标.
![](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/f89eef3148f2d4d09379767b4af69132.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/dad2a36927223bd70f426ba06aea4b45.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/800c5e266b4ad8462a46970f0a232d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46b053f98b1d05a2043e94eeaefea87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4757181824e15e0f21e5bdd55448783.png)
(2)若椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d25e70d37af93796965efc8d342185.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/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
您最近一年使用:0次
2018-06-11更新
|
809次组卷
|
3卷引用:[全国市级联考】河南省洛阳市2017-2018学年高二质量检测数学(文)
解题方法
8 . 已知椭圆
:
的离心率为
,短轴为
.点
满足
.
(1)求椭圆
的方程;
(2)设
为坐标原点,过点
的动直线
与椭圆交于点
、
,是否存在常数
使得
为定值?若存在,求出
的值;若不存在,请说明理由.
![](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/3f82eb4ba631d0f50d848aa6e576b379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c153027427477bcd0a7228b14ce96cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d35085cfb929adc87e53d03da70ea21e.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/dad2a36927223bd70f426ba06aea4b45.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/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52ffa36f15ca819df3c28cfe05da257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2010·河北石家庄·三模
名校
9 . 已知椭圆C:
的离心率为
,过右焦点F且斜率为1的直线交椭圆C于A、B两点,N为弦AB的中点.
(Ⅰ)求直线ON(O为坐标原点)的斜率
;
(Ⅱ)对于椭圆C上任意一点M,试证:对任意的![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ab55147ca5c0f958af43b0637ee31b.png)
等式
都成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ec56b59d6f2654570c2b5c4fd13a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
(Ⅰ)求直线ON(O为坐标原点)的斜率
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da15827177a0318538b40298fff87bc.png)
(Ⅱ)对于椭圆C上任意一点M,试证:对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ab55147ca5c0f958af43b0637ee31b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0599b4b1e9896f06e7bebe7bca8eab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c935d27c69a7ae0b2a6aa73f92271b.png)
您最近一年使用:0次
2018-05-21更新
|
445次组卷
|
4卷引用:2012届江西师大附中高三5月模拟考试理科数学试卷
(已下线)2012届江西师大附中高三5月模拟考试理科数学试卷(已下线)2010年河北省正定中学高三下学期第三次模拟考试数学(理)【全国百强校】甘肃省西北师范大学附属中学2018届高三冲刺诊断考试数学(理)试题2020届辽宁省大连市高三上学期第二次模拟考试数学(理)试卷
名校
解题方法
10 . 已知椭圆
:
的左右焦点分别为
,且离心率为
,点
为椭圆上一动点,
面积的最大值为
.
(1)求椭圆
的标准方程;
(2)设
分别为椭圆的左右顶点,过点
作
轴的垂线
,
为
上异于点
的一点,以
为直径作圆
.若过点
的直线
(异于
轴)与圆
相切于点
,且
与直线
相交于点
,试判断
是否为定值,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c63dd5f3379e6bdeb875e7d2b11509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b799737e84f54908b8700fbaf1f96a80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cfa1e7ffae662aefb49a44c52d4954d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be47e8eeb4b50fce3904acef794099e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cef812f839622326a7d7027cc806aaeb.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e4e4c7a79d9d3cdb9ac5949d53e33e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce619c464f2aa04178ea0111ba60544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289d7a880379d6060065c829b45b0ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce619c464f2aa04178ea0111ba60544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a61d572ecf27dc02fcbd588f24647b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60dc9f8e47e78b7f4ab2dd9cd559f601.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
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2018-05-19更新
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2卷引用:【全国市级联考】山东省威海市2018届高三下学期第二次模拟考试理科数学试卷