名校
1 . 如图,
、
分别是椭圆的左顶点和上顶点,从椭圆上一点
向
轴作垂线,垂足为右焦点
,且
,点
到右准线的距离为
,则椭圆方程为( )
![](https://img.xkw.com/dksih/QBM/2022/2/19/2919962070900736/2925342295203840/STEM/da977351-1b1b-4c3a-9c73-aeab45d5f53f.png?resizew=192)
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd3462c2ed8cf90fd7cb391c38bbe6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://img.xkw.com/dksih/QBM/2022/2/19/2919962070900736/2925342295203840/STEM/da977351-1b1b-4c3a-9c73-aeab45d5f53f.png?resizew=192)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2022-02-27更新
|
413次组卷
|
2卷引用:江苏省南通市海门中学2021-2022学年高二上学期期末数学试题
21-22高二上·江苏南通·阶段练习
解题方法
2 . 已知椭圆
的长轴长为
,右焦点到右准线的距离为
.
(1)求椭圆的方程;
(2)若直线
与椭圆交于
,
两点,椭圆上存在点
,使得
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
(1)求椭圆的方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb9a905247d151e281c98fc2bc63a732.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae287dfe3c146e053835d29c839cdf30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
19-20高二上·江苏·阶段练习
名校
3 . 已知
分别是椭圆
的左、右焦点,过
且不与
轴垂直的动直线
与椭圆交于
两点,点
是椭圆
右准线上一点,连结
,当点
为右准线与
轴交点时,有
.
(1)求椭圆
的离心率;
(2)当点
的坐标为
时,求直线
与直线
的斜率之和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833fb9b3ad298dcc9ccd2e576663654b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](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/2ec8858389f4c3156a946ba8bf0d8a7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6a3389636c499fb100a6f53449b2dd.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80991c1f0c963104740e50cfff6f29a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
您最近一年使用:0次
2019-11-06更新
|
789次组卷
|
4卷引用:江苏省如皋市2019-2020学年度高二年级上学期教学质量调研(一)数学试题
(已下线)江苏省如皋市2019-2020学年度高二年级上学期教学质量调研(一)数学试题江苏省泰州中学2019-2020学年高二上学期期中考试数学试题江西省上饶市横峰中学2020-2021学年高二下学期第一次月考数学(文)试题江苏省南通市平潮高级高中2020-2021学年高二上学期12月学情检测数学试题
4 . 已知椭圆C:
的离心率是
,右准线是
,下顶点D,点
,过点E的直线
斜率存在
交椭圆C于A、B两点
在B的左侧
.
![](https://img.xkw.com/dksih/QBM/2018/12/7/2091540557987840/2093791174688768/STEM/eacf2842d2b64379a119194c9c0973c0.png?resizew=203)
求椭圆C标准方程;
求证:
的大小为定值;
若
的外接圆M与椭圆C在A处有相同的切线,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00df4f17848c072b51e80d427d486e31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f78c38805c09dcfbcc42103308975a74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eeb127770467c6634fcf72994599da7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f221ce8215f8d5879828e0eefcac618.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6d2820e8cba29ff9c4b978d7b52f4e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c46bc3b28da6a92897a0a54d52550d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://img.xkw.com/dksih/QBM/2018/12/7/2091540557987840/2093791174688768/STEM/eacf2842d2b64379a119194c9c0973c0.png?resizew=203)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f988ce0ee0d4a66595774619ddcd0838.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bb89a362c1faf4d0c306eabbb59710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bb961bd7db3adb76af2d4cedb611bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bb961bd7db3adb76af2d4cedb611bd7.png)
您最近一年使用:0次
11-12高二·江苏盐城·期末
解题方法
5 . 已知椭圆的两焦点为
,
,直线x = 4是椭圆的一条准线.
(1)求椭圆方程;
(2)设点P在椭圆上,且
,求cos∠F1PF2的值;
(3)设P
是椭圆内一点,在椭圆上求一点Q,使得
最小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9bece414af7ecb2d796dc8a6f549e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e62a44b8712ce4483b8710cda0dc1c.png)
(1)求椭圆方程;
(2)设点P在椭圆上,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9e8fc6d3b97b4020af8a979c90691e7.png)
(3)设P
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/461d7c9510f0cd34115560268e06da80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5801d945eb5d6459294ead34fcc32c16.png)
您最近一年使用:0次
10-11高二下·河北石家庄·期中
解题方法
6 . 已知椭圆的一个焦点为
,对应的准线方程为
,且离心率
满足:
成等差数列
![](https://img.xkw.com/dksih/QBM/2011/5/12/1570194653110272/1570194658435072/STEM/3b803398bafd466fa8e5422c9676742e.png?resizew=308)
(1)求椭圆
方程;
(2)如图,抛物线
的一段与椭圆
的一段围成封闭图形,点
在
轴上,又A,B两点分别在抛物线及椭圆上,且
轴,求
的周长
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9bece414af7ecb2d796dc8a6f549e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a089c207e39a24d0d82aa853ac2bbb8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d12d67e2f66fae5a75df10f0e79b1d9a.png)
![](https://img.xkw.com/dksih/QBM/2011/5/12/1570194653110272/1570194658435072/STEM/3b803398bafd466fa8e5422c9676742e.png?resizew=308)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)如图,抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f36374ce95a4945d0e58264c2b271f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcb94c4a46f48f243f98768a5ee34a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307d80faaf253cedb782efd4c14072c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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