名校
解题方法
1 . 已知椭圆
的左、右焦点分别为
,离心率为
,过左焦点
的直线
与椭圆
交于
两点(
不在
轴上),
的周长为
.
(1)求椭圆
的标准方程;
(2)若点
在椭圆
上,且
为坐标原点),求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5eb2485f90dbfd0dfd6e7d179a856f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/453ea8f3a2b85526b54bf453871c3820.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若点
![](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/0c8d68257ba90d0b05303d8d4a7bae33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2afc87067a2c8ee603eb8903bac424a.png)
您最近一年使用:0次
2023-02-14更新
|
664次组卷
|
7卷引用:宁夏中卫市2023届高三二模数学(理)试题
名校
解题方法
2 . 如图,椭圆
:
的一个顶点为
,离心率为
.
,
是过点
且互相垂直的两条直线,其中,
交圆
:
于
,
两点,
交椭圆
于另一点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/5266f371-7c9d-40af-b2ac-702a84b43040.png?resizew=209)
(1)求椭圆
的方程;
(2)求
面积取最大值时直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6951479694aec937a712901634a5a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.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/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/5266f371-7c9d-40af-b2ac-702a84b43040.png?resizew=209)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
您最近一年使用:0次
2021-06-03更新
|
422次组卷
|
2卷引用:宁夏中卫市2022届高三第一次模拟数学(理)试题
3 . 已知椭圆
的离心率
,且椭圆过点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8da36e3081bfe5d32c9ec70be4da3da.png)
(1)求椭圆
的标准方程;
(2)设直线
与
交于
、
两点,点
在椭圆
上,
是坐标原点,若
,判定四边形
的面积是否为定值?若为定值,求出该定值;如果不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075ba8c6fb5ef7288cd3fed425c8e69e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8da36e3081bfe5d32c9ec70be4da3da.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设直线
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66c8bd916b5945fee04c1acb26f8ac86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7346144de4c74f6b8bb14bea9ebd41.png)
您最近一年使用:0次
2020-02-18更新
|
4222次组卷
|
21卷引用:宁夏中卫市中宁县2022-2023学年高二上学期质量测查(期末)数学(理)试题
宁夏中卫市中宁县2022-2023学年高二上学期质量测查(期末)数学(理)试题【市级联考】湖南省郴州市2019届高三第三次质量检测数学(文)试题【市级联考】陕西省榆林市2019届高三第四次普通高等学校招生模拟考试文科数学试题2020届河南省南阳市高三上学期期末数学(理)试题2020届河南省信阳市高三第二次教学质量检测数学(理)试题2019届湖南省长沙市雅礼中学高三下学期5月月考数学(文)试题2019届陕西省榆林市高三第四次模拟考试数学(文)试题(已下线)提升套餐练05-【新题型】2020年新高考数学多选题与热点解答题组合练(已下线)冲刺卷05-决战2020年高考数学冲刺卷(山东专版)2019届吉林省普通高三第三次联合模拟数学(文)试题2020届河南省开封市第五中学高三第四次教学质量检测数学(理)试卷(已下线)专题31 圆锥曲线中的定点、定值、探索性问题-冲刺2020高考跳出题海之高三数学模拟试题精中选萃(已下线)专题06 解析几何中的定点、定值问题(第五篇)-备战2020年高考数学大题精做之解答题题型全覆盖2020届黑龙江省大庆实验中学高三第一次模拟数学(文)试题河南省信阳市2020届高三上学期第二次教学质量检测(期末)数学(文)试题湖南省邵阳市邵东县第一中学2020-2021学年高三上学期第二次月考数学试题湖南省长沙市明德中学2019-2020学年高二上学期期中数学试题苏教版(2019) 选修第一册 选填专练 第3章 微专题七 高考中圆锥曲线问题(3):证明与探索性问题河南省许平汝联盟2021-2022学年高三下学期4月模拟考试文科数学试题河南省鹤壁市浚县第一中学2021-2022学年高三下学期4月考试文科数学试题江西省信丰中学2021-2022学年高二下学期第一次月考数学(理)B层试题
名校
4 . 已知椭圆C的中心在坐标原点,焦点在x轴上,左顶点为A,左焦点为
,点
在椭圆C上,直线
与椭圆C交于E,F两点,直线AE,AF分别与y轴交于点M,N
Ⅰ
求椭圆C的方程;
Ⅱ
在x轴上是否存在点P,使得无论非零实数k怎样变化,总有
为直角?若存在,求出点P的坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b2a3a20f2715f640eab19553ee20395.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a57263eb46061de34df3c52814cfc1b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c42d7b8e1d3221fc8b8074c9a090270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba441131061f773ab758b740dae3ad9f.png)
您最近一年使用:0次
2016-12-04更新
|
1243次组卷
|
4卷引用:【市级联考】宁夏中卫市2019届高三下学期第一次模拟考试数学(文)试题