名校
1 . 已知椭圆
经过点
,且离心率为
.
(1)求椭圆
的方程;
(2)设
分别为椭圆
的左、右焦点,不经过
的直线
与椭圆
交于两个不同的点
,如果直线
、
、
的斜率依次成等差数列,求焦点
到直线
的距离
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e641014eb998f16c14ee0ec59f9d54f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/cabea664e61863b3b3279dbce607924e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbad65b3d744b70da2480eee1cdb587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
您最近一年使用:0次
2018-02-23更新
|
1015次组卷
|
3卷引用:湖北省武昌2018届高三元月调研考试数学理科试题
名校
解题方法
2 . 已知椭圆
的离心率
,且经过点
.
(1)求椭圆方程;
(2)过点
的直线与椭圆交于
两个不同的点,求线段
的垂直平分线在
轴截距的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075ba8c6fb5ef7288cd3fed425c8e69e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe8530b8e246a9a5ec9fe3b9c347d5a.png)
(1)求椭圆方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d059a0d71bddb677c603d84fac444b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
2018-02-09更新
|
738次组卷
|
6卷引用:湖北省荆州中学、宜昌一中等“荆、荆、襄、宜四地七校考试联盟”2018届高三2月联考数学(文)试题1
3 . 已知椭圆
过点
,且焦距为2.
(1)求椭圆C的标准方程;
(2)设过点
的直线
与椭圆C交于不同的两点A,B,点
,如果
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef6b94e42869013745050aba059b58dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbf2d08ec1910c9f56333cbe6d419299.png)
(1)求椭圆C的标准方程;
(2)设过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/068b743722e6b96c0586b0e8e8771739.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/621c1c1a07e1b0f9d5d275463f24509b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0b8527f5e4b40dcf5df7b1810ae7da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2017-03-02更新
|
1784次组卷
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3卷引用:2017届湖北省部分重点中学高三上学期第二次联考数学(理)试卷1
4 . 已知直线
与圆
交于
两点,过
分别作
的垂线与
轴交于
两点,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0149cda9a3647b2c528b6d4973c0c364.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5d069d53560141d3092219daaba3a62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0128793bbbaabe8301b23e4c96ac8583.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb6573126516181bee81e64513ec1da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0149cda9a3647b2c528b6d4973c0c364.png)
A.4 | B.3 | C.![]() | D.![]() |
您最近一年使用:0次
2017-03-02更新
|
2295次组卷
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2卷引用:湖北省武昌实验中学2023届高考适应性考试数学试题