解题方法
1 . 已知椭圆
的离心率为
,短轴长为
.
(1)求椭圆
的方程;
(2)设
是椭圆
的左、右顶点,
是椭圆
的右焦点.过点
的直线
与椭圆
相交于
两点(点
在
轴的上方),直线
分别与
轴交于点
,试判断
是否为定值?若是定值,求出这个定值;若不是定值,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a200ca2c4af794f4d1c6a5443830b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e4d7503a7d57ba242ad4e05c7006a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaecdbcf9d0518f42e0f28ea9d1e3f51.png)
您最近一年使用:0次
名校
解题方法
2 . 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)
您最近一年使用:0次
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
解题方法
3 . 已知椭圆
的一个顶点为
,焦距为2.
(1)求椭圆C的方程;
(2)设椭圆C的左、右焦点分别为
,P为椭圆C上一动点,射线
分别交椭圆C于点A,B,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b8f9648c81481bb487a43f95c04d991.png)
(1)求椭圆C的方程;
(2)设椭圆C的左、右焦点分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25d82387e48eafb286785a21a8d4150f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e5a29b7ed0c415987dfc800850231a2.png)
您最近一年使用:0次
名校
解题方法
4 . 已知椭圆
过点
,且离心率为
.
(1)求椭圆
的方程;
(2)设过点
且斜率为
的直线
与椭圆
交于
、
两点,线段
的垂直平分线交
轴于点
,判断
是否为定值?如果是定值,请求出此定值;如果不是定值,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.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/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/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d839c99a55e656400ff78054a09d6eeb.png)
您最近一年使用:0次
5 . 已知椭圆
的离心率为
且过点
.
(1)求椭圆C的方程;
(2)设直线
与椭圆C交于不同的两点P,Q(均异于点A),求证:直线AP,AQ的斜率之和为定值;
(3)已知点M,N在C上,且
,求证:直线MN过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ea1f5bdd213c7c3a571b4c38850bf1.png)
(1)求椭圆C的方程;
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4365c55b9378c1536b94b763398ec4c2.png)
(3)已知点M,N在C上,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f59747cee312ee5140643428cae79efa.png)
您最近一年使用:0次
解题方法
6 . 已知椭圆
的一个顶点为
,焦距为
.
(1)求椭圆
的方程;
(2)设点
是第一象限内椭圆
上一点,过
作
轴的垂线,垂足为
.点
关于原点的对称点为
,直线
与椭圆的另一个交点为
,直线
与
轴的交点为
.求证:
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79c768dcb429d27d825d9950f39c68a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55b9f52eb2dd6ab0a7fe8ee525597270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设点
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95d62b9a1fc994c972781c7013fedba.png)
您最近一年使用:0次
真题
名校
7 . 椭圆
(
)的离心率是
,点
在短轴
上,且
.
(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
两点,是否存在常数
,使得
为定值?若存在,求
的值;若不存在,请说明理由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0fe9059acc47d2447576e1260c4622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22840186db0afc0e2b2e8915ce79b998.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a9abde5a363db220635908c0d423cca.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/01c74a907dda6bb7d9d56d009d9df253.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)
您最近一年使用:0次
2016-12-03更新
|
7199次组卷
|
31卷引用:北京市一零一中学2021届高三下学期统考四数学试题
北京市一零一中学2021届高三下学期统考四数学试题2015年全国普通高等学校招生统一考试文科数学(四川卷)河北省黄骅中学2017-2018学年高二上学期期末考试数学(文)试题四川省乐山市2017-2018学年高二上学期期末教学质量检测数学理试题四川省乐山市2017-2018学年高二上学期期末教学质量检测数学(文)试题【全国校级联考】湖南省衡阳县2017-2018学年高二下学期期末考试数学(文)试题【全国百强校】黑龙江省鹤岗市第一中学2018-2019学年高二上学期期末考试数学(文)试题【全国百强校】四川省棠湖中学2018-2019学年高二上学期期末考试数学(文)试题四川省棠湖中学2018-2019学年高二上学期期末考试数学(理)试题【全国百强校】四川省棠湖中学2018-2019学年高二下学期期中考试数学(文)试题黑龙江省哈尔滨市第六中学2019-2020学年高二上学期10月份阶段性总结数学(理)试题四川省广安市广安中学2019-2020学年高二上学期第四次月考数学(理)试题(已下线)专题9.9 圆锥曲线的综合问题(讲)【理】-《2020年高考一轮复习讲练测》2020届四川省绵阳南山中学高三上学期12月月考数学(文)试题2020届山西省同煤二中联盟体高三3月模拟数学(文)试题2020届宁夏平罗中学高三上学期第一次月考数学(理)试题四川省绵阳市涪城区南山中学2019-2020学年高二上学期期中数学(理)试题陕西省西安市长安区第一中学2017-2018学年高三下学期第十五次质量检测数学(理)试题黑龙江省哈尔滨第六中学2019-2020学年上学期高二10月月考数学理科试题江苏省徐州市第一中学2020届高三下学期6月第一次适应性考试数学试题江苏省南通市海门市包场高级中学2019-2020学年高二下学期新高考第一次适应性考试数学试题(已下线)专题19 圆锥曲线综合-2020年高考数学(理)母题题源解密(全国Ⅱ专版)(已下线)专题19 圆锥曲线综合-2020年高考数学(文)母题题源解密(全国Ⅱ专版)(已下线)思想02 分类与整合思想 第三篇 思想方法篇(练) 2021年高考二轮复习讲练测(浙江专用)江西省宜春市实验中学2020-2021学年高二上学期第二次月考数学(文)试题四川省成都市双流区棠湖中学2018-2019学年高二上学期期末数学(理)试题四川省成都市双流区棠湖中学2018-2019学年高二上学期期末数学(文)试题2020届河北省石家庄市第二中学高三一模教学质量检测数学(理)试题(已下线)专题17 圆锥曲线常考题型05——圆锥曲线中的存在性问题与面积问题-【重难点突破】2021-2022学年高二数学上册常考题专练(人教A版2019选择性必修第一册)(已下线)专题24 解析几何解答题(文科)-2专题37平面解析几何解答题(第一部分)
名校
解题方法
8 . 已知椭圆
,点
在椭圆
上,且离心率
.
(1)求椭圆
的方程;
(2)设
为椭圆
上任一点,
为椭圆
的左、右顶点,
为
中点,求证:直线
与直线
它们的斜率之积为定值;
(3)若椭圆
的右焦点为
,过
的直线
与椭圆
交于
,求证:直线
与直线
斜率之和为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/480f004c98a0df86a35a48bc973f0472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.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/00442d96d695db2c58bf1fb7165fca94.png)
![](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/f46b053f98b1d05a2043e94eeaefea87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46b053f98b1d05a2043e94eeaefea87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
(3)若椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ba5cbb31299d683ac6c7dd795db85.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/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c57b07f75e97d9f84718bd495ebcf4.png)
您最近一年使用:0次
2021-10-28更新
|
1885次组卷
|
4卷引用:北京市门头沟区大峪中学2019-2020学年高二上学期期中数学试题
名校
解题方法
9 . 已知椭圆C:
的短轴长等于
,离心率
.
(1)求椭圆
的标准方程;
(2)过右焦点
作斜率为
的直线
,与椭圆
交于A,B两点,线段
的垂直平分线交
轴于点
,判断
是否为定值,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过右焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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您最近一年使用:0次
2022-03-29更新
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1084次组卷
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3卷引用:北京市石景山区2022届高三一模数学试题
解题方法
10 . 已知椭圆
的左顶点为
,上、下顶点分别为
.
(1)求椭圆
的方程;
(2)设
是椭圆
上一点,不与顶点重合,点
与点
关于坐标原点
中心对称,过
作垂直于
轴的直线交直线
于点
,再过
作垂直于
轴的直线交直线
于点
.求证:
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa924383baaf86e9603a812a9aba144.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2451835b9ad821bc17a317bc0189a38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3c6fe9427e64e9be83f2f5c01ceea4.png)
您最近一年使用:0次
2023-05-23更新
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551次组卷
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4卷引用:北京市海淀区2023届高三数学查缺补漏题(2)
北京市海淀区2023届高三数学查缺补漏题(2)北京市海淀区教师进修学校附属实验学校2024届高三上学期12月练习数学试题(已下线)重难点突破19 圆锥曲线中的仿射变换、非对称韦达、光学性质、三点共线问题(六大题型)-2(已下线)第7讲:圆锥曲线的模型【练】