解题方法
1 . 已知椭圆
的长轴是短轴的2倍,且右焦点为
,点B在椭圆上,且点C为点B关于x轴的对称点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/bd3d3166-4ceb-4909-abb0-95b089ef1c76.png?resizew=251)
(1)求椭圆C的标准方程;
(2)若点B在第一象限且
为等边三角形,求该等边三角形的边长;
(3)设P为椭圆E上异于B,C的任意一点,直线
与x轴分别交于点M,N,判断
是否为定值?若是,求出定值;若不是,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ce176fdfbb44b8459f441a8d805013f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/bd3d3166-4ceb-4909-abb0-95b089ef1c76.png?resizew=251)
(1)求椭圆C的标准方程;
(2)若点B在第一象限且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcc52a06d806fde891e09a0a389fcd4.png)
(3)设P为椭圆E上异于B,C的任意一点,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c3cc1f331dbb2248b0829039df7f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43995a8753fb39e768bc0e04a0e2a7b3.png)
您最近一年使用:0次
2022-10-28更新
|
1018次组卷
|
4卷引用:北京市第一五六中学2021-2022学年高二上学期期中数学试题
北京市第一五六中学2021-2022学年高二上学期期中数学试题北京市第一五六中学2023-2024学年高二上学期期中测试数学试题(已下线)第04讲 圆锥曲线综合(练)(已下线)重难点突破06 弦长问题及长度和、差、商、积问题(七大题型)-2
2 . 设椭圆
的右焦点为
,离心率为
,
为圆
:
的圆心.
(1)求椭圆的方程;
(2)已知过椭圆左焦点
的直线
(斜率存在且不为0)交椭圆于
,
两点,过
且与
垂直的直线
与圆
交于
,
两点,求四边形
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95588d7be622c5dadb69a5b705219f6a.png)
(1)求椭圆的方程;
(2)已知过椭圆左焦点
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c593ebdb2f1934a0cb56f8c44f454f8.png)
您最近一年使用:0次
2022-04-15更新
|
509次组卷
|
2卷引用:黑龙江省齐齐哈尔市恒昌中学校2021-2022学年高二上学期期中考试数学试题
名校
解题方法
3 . 已知圆
,点
是圆
上的动点,过点
作
轴的垂线,垂足为
.
(1)已知直线
:
与圆
相切,求直线
的方程;
(2)若点
满足
,求点
的轨迹方程;
(3)若过点
且斜率分别为
的两条直线与(2)中
的轨迹分别交于点
、
,
、
,并满足
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01268ac8e838d0f45ccb35bc1d479d0.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(1)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77462bdf303d687ce5241a413cc9db9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01268ac8e838d0f45ccb35bc1d479d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5d2c8415d70008be53ae18111b96e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(3)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb15d572f57b05bdb7171622323b900.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a244e94d026b6bf92d9779a95387b5d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69e3f7ddd51215d00661c09cd900d60.png)
您最近一年使用:0次
2022-03-27更新
|
814次组卷
|
2卷引用:江苏省常州市第一中学2021-2022学年高二上学期12月学习质量检测数学试题
4 . 已知椭圆C:
的焦距为
,其短轴的两个端点与长轴的一个端点构成正三角形.
(1)求椭圆C的方程;
(2)过点
且不过点
的直线与椭圆C交于A,B两点,直线AE与直线
交于点M.试判断直线BM与直线DE的位置关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
(1)求椭圆C的方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d776a89f4fd29dccffe1040069d59ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e4c60a39479f30736dde0c6085833b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
您最近一年使用:0次
21-22高二·江苏·单元测试
解题方法
5 . 已知圆
,点
,点Q在圆
上运动,
的垂直平分线交
于点P.
(1)求动点P的轨迹的方程C;
(2)设
分别是曲线C上的两个不同点,且点M在第一象限,点N在第三象限,若
,O为坐标原点,求直线MN的斜率;
(3)过点
的动直线l交曲线C于
两点,在y轴上是否存在定点T,使以AB为直径的圆恒过这个点?若存在,求出点T的坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4463d26d5bb4a96f11cffdfa2aad480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e62a44b8712ce4483b8710cda0dc1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16c755ab3fea6ca99b13193a5d7e485.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c30a7506331e47342fb1e7d2e12d041.png)
(1)求动点P的轨迹的方程C;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f44755c5fee4b90266eac73ad47a128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12967e4f8c1e2e29c1999caa62f79b71.png)
(3)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6831c6674f4bf86df7c8dd730e1c187d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
您最近一年使用:0次
名校
解题方法
6 . 已知椭圆
(
)与椭圆
的焦点相同,且椭圆C过点
.
(1)求椭圆C的方程;
(2)是否存在圆心在原点的圆,使得该圆的任意一条切线与椭圆C恒有两个交点A,B,且
,(O为坐标原点),若存在,求出该圆的方程;若不存在,说明理由;
(3)P是椭圆C上异于上顶点
,下顶点
的任一点,直线
,
,分别交x轴于点N,M,若直线OT与过点M,N的圆G相切,切点为T.证明:线段OT的长为定值,并求出该定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d72a07a4e5acfc140a3cea1f26b951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2603ea55ff8561111b46b1dd99172347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53f4aad2e5282f87f561e6aa91d0a32a.png)
(1)求椭圆C的方程;
(2)是否存在圆心在原点的圆,使得该圆的任意一条切线与椭圆C恒有两个交点A,B,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
(3)P是椭圆C上异于上顶点
![](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)
您最近一年使用:0次
2021-12-06更新
|
1185次组卷
|
3卷引用:四川省成都市树德中学2021-2022学年高二上学期11月阶段性测试数学(理科)试题
四川省成都市树德中学2021-2022学年高二上学期11月阶段性测试数学(理科)试题四川省成都市第七中学2021-2022学年高二上学期12月阶段性测试数学(理)试题(已下线)专题3.16 圆锥曲线中的定点、定值问题大题专项训练(30道)-2021-2022学年高二数学举一反三系列(人教A版2019选择性必修第一册)
7 . 1.在平面直角坐标系xOy中,已知点
,点M满足
.记M的轨迹为C.
(1)求C的方程;
(2)点T在直线x=4上,过T的两条直线分别交C于A,B两点和P,Q两点,且|TA|·|TB|=|TP|·|TQ|,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e10f5be271d5e18347e2792d348e5411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b549d39d7e273f5ba461f1d508b20dc.png)
(1)求C的方程;
(2)点T在直线x=4上,过T的两条直线分别交C于A,B两点和P,Q两点,且|TA|·|TB|=|TP|·|TQ|,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18cad6ab2dd26fb28da19be0f8358265.png)
您最近一年使用:0次
8 . 已知圆
,点
是圆
上的动点,过点
作
轴的垂线,垂足为
.
(1)若点
满足
,求点
的轨迹方程;
(2)若过点
且斜率分别为
的两条直线与(1)中
的轨迹分别交于点
、
,
、
,并满足
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01268ac8e838d0f45ccb35bc1d479d0.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45fa696f42eb38eb8e18b5bc5eca4c67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb15d572f57b05bdb7171622323b900.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5538d4c428da90edee6ca488a244dfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69e3f7ddd51215d00661c09cd900d60.png)
您最近一年使用:0次
9 . 已知椭圆
,
分别为左右焦点,O为坐标原点,过O作直线
交椭圆于C,D两点,若
周长的最小值为6,面积的最大值为
.
(1)求椭圆E的方程;
(2)设直线
交椭圆E于A,B两点,
①若直线
的斜率为
且
的面积为
,求直线方程;
②若直线
与x轴交于M点,当点A在x轴的上方时,有
,且直线
与圆
相切于点N,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbdbb45d7359537458736c9ea5bf9e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
(1)求椭圆E的方程;
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
①若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24c14ff9b66f21c05e52dc3c8908c2df.png)
②若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b661c79b7b866204fd4084c37bdd4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41b658cce32a1d23f670aa479d49c0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac35b1e8a952aac4f4cdaaf02d868d04.png)
您最近一年使用:0次
10 . 椭圆
经过点
,其右焦点为抛物线
的焦点
;直线
与椭圆
交于
,
两点,且以
为直径的圆过原点.
![](https://img.xkw.com/dksih/QBM/2021/11/6/2845039716614144/2847497667117056/STEM/ee9515db-39ec-4d22-989a-c010bb3ae361.png?resizew=299)
(1)求椭圆
的方程;
(2)若过原点的直线
与椭圆
交于
两点,且
,求四边形
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd486b8796b3454eab219c28ed131683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc899dac7a2bf6112ca7d7d474eaff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b36df9887ae94b7f1fe112ad43e9ddc7.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/b1241216f3c1cb5e73043dd1037f556d.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2021/11/6/2845039716614144/2847497667117056/STEM/ee9515db-39ec-4d22-989a-c010bb3ae361.png?resizew=299)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)若过原点的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8069c40eae9104a798c2334b1b91bf06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c593ebdb2f1934a0cb56f8c44f454f8.png)
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