解题方法
1 . 已知椭圆
经过两点
.
(1)求椭圆C的方程和离心率;
(2)设P,Q为椭圆C上不同的两个点,直线AP与y轴交于点E,直线AQ与y轴交于点F,若点
满足
,求证:P,O,Q三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37bd469a9abd497dc30719d3b5bf0e37.png)
(1)求椭圆C的方程和离心率;
(2)设P,Q为椭圆C上不同的两个点,直线AP与y轴交于点E,直线AQ与y轴交于点F,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ac1fd914a1b9394a1fadc723432c8c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9944727e7f2e0036efa90d8598d92967.png)
您最近一年使用:0次
2 . 已知离心率为
的椭圆
的左焦点为
,左、右顶点分别为
、
,上顶点为
,且
的外接圆半径大小为
.
(1)求椭圆
方程;
(2)设斜率存在的直线
交椭圆
于
两点(
位于
轴的两侧),记直线
、
、
、
的斜率分别为
、
、
、
,若
,求
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745d61fea34d786a64a45406a5a1bd71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设斜率存在的直线
![](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/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0ff310aabd2282b539537ebed3f788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc48974114e23f5a801843710c7ae21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec18c028746b73be7503ff6ff458a8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e935bb9d7b7115429edbd1e7469af65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf434334b09cc0fdd4e86e84e6ceb00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3307e11f7e6896e32aa510bbed949ac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6ac9e4439b8f0c82427e410dbc86735.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71a85a0f7dbb0797d608108d95a32bd2.png)
您最近一年使用:0次
2023-04-16更新
|
1693次组卷
|
7卷引用:数学(北京卷)
(已下线)数学(北京卷)安徽省安庆市示范高中2023届高三下学期4月联考数学试卷(已下线)模块四 专题7 解析几何(已下线)模块八 专题9 以解析几何为背景的压轴解答题山东省淄博实验中学2023届高三第三次模拟考试数学试题湖北省襄阳市第五中学2023届高三下学期适应性考试(一)数学试题江西省宜春市上高二中2024届高三上学期第二次月考数学试题
解题方法
3 . 已知椭圆
经过点
,离心率为
,
与
轴交于两点
,
,过点
的直线
与
交于另一点
,并与
轴交于点
,直线
与直线
交于点
.
(1)求椭圆
的方程;
(2)设
为原点,当点
异于点
时,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cf6cca367ce2afd96d7d951f9587e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/114460aab294eb99eec63e94b675216f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.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/6c240561788bc63f41a6703219fb66d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/761b5ed5a4a0300cd10948b77e45ad46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5215b714cde3ed7790b3ed4f6711c3.png)
您最近一年使用:0次
2023-04-14更新
|
948次组卷
|
3卷引用:北京市延庆区2023届高三一模数学试题
解题方法
4 . 如图,已知椭圆
的两个焦点分别为
,且椭圆与直线
相切.
![](https://img.xkw.com/dksih/QBM/2023/4/6/3210683898822656/3210755080314880/STEM/349379d3c20948648a488141470f73b3.png?resizew=247)
(1)求椭圆的方程.
(2)设椭圆的左右顶点分别为
,若直线
与x轴交于T点,点M为直线l上异于点T的任意一点,直线
分别与椭圆交于P,Q两点,连结
的直线l与交于N点.是否存在t,使得直线
与以
为直径的圆总相切?若存在,求出t;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/871868260c78a20767eae39bcdb97476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2da9340b67e9fc5762b55017fde9826d.png)
![](https://img.xkw.com/dksih/QBM/2023/4/6/3210683898822656/3210755080314880/STEM/349379d3c20948648a488141470f73b3.png?resizew=247)
(1)求椭圆的方程.
(2)设椭圆的左右顶点分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce400ad2c8eeddd3a78251476aff7ac5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08c40c78e929946729c8ccd4cadf5740.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46b053f98b1d05a2043e94eeaefea87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
名校
解题方法
5 . 已知椭圆
的离心率为
,长轴的左端点为
.
(1)求C的方程;
(2)过椭圆C的右焦点的任一直线l与椭圆C分别相交于M,N两点,且AM,AN与直线
,分别相交于D,E两点,求证:以DE为直径的圆恒过x轴上定点,并求出定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd99c5000629d7f49499d666e68f40d.png)
(1)求C的方程;
(2)过椭圆C的右焦点的任一直线l与椭圆C分别相交于M,N两点,且AM,AN与直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
您最近一年使用:0次
2023-04-06更新
|
1358次组卷
|
7卷引用:北京市门头沟区2023届高三综合练习(一)数学试题
北京市门头沟区2023届高三综合练习(一)数学试题专题10平面解析几何(非选择题部分)北京卷专题23平面解析几何(解答题部分)北京市第八中学2023-2024学年高三下学期零模练习数学试题天津市河西区2023-2024学年高三下学期总复习质量调查(三)数学试卷江西省景德镇一中2022-2023学年高一(19班)下学期期中考试数学试题.(已下线)湖北省“荆、荆、襄、宜四地七校”考试联盟2023-2024学年高二下学期期中联考数学试卷变式题16-19
解题方法
6 . 已知椭圆
过
,
两点.
(1)求椭圆W的方程;
(2)直线
与x轴交于点
,过点M作不垂直于坐标轴且与
不重合的直线l,l与椭圆W交于C,D两点,直线
,
分别交直线
于P,Q两点,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/014b99f5c93a4ce8cd6251c12c1d1b37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32366143230ca122894a4bada7c7b96d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/879472805d78656a200ef4ae2ca1ac77.png)
(1)求椭圆W的方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b62769b7177ef4bc952dc1dd51d6b510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d71f015144ffaf1faec94a259b4a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9be13ea579d4b0048acba77db6b6ac4f.png)
您最近一年使用:0次
2023-04-05更新
|
487次组卷
|
2卷引用:北京市玉渊潭中学2023届高三下学期开学摸底数学试题
名校
解题方法
7 . 已知椭圆
过点
,且离心率为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(1)求椭圆E的标准方程;
(2)若直线l与椭圆E相切,过点
作直线l的垂线,垂足为N,O为坐标原点,证明:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b54b9cf95418bc3dce6e4c698b9907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(1)求椭圆E的标准方程;
(2)若直线l与椭圆E相切,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c9dcfd9f4c5298035870cb88a34169.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291a0231b8630f8eda4245105ef7c38b.png)
您最近一年使用:0次
2023-03-29更新
|
2197次组卷
|
7卷引用:北京市房山区2023届高三一模数学试题
解题方法
8 . 已知椭圆
经过点
.
(1)求椭圆E的方程及离心率;
(2)设椭圆E的左顶点为A,直线
与E相交于M,N两点,直线AM与直线
相交于点Q.问:直线NQ是否经过x轴上的定点?若过定点,求出该点坐标;若不过定点,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fffc53a9c5bc82c3c28bd28f8df399ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8da36e3081bfe5d32c9ec70be4da3da.png)
(1)求椭圆E的方程及离心率;
(2)设椭圆E的左顶点为A,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f51698f7095e795d4f0527b986ac1db2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
您最近一年使用:0次
2023-03-27更新
|
1320次组卷
|
3卷引用:北京市朝阳区2023届高三一模数学试题
解题方法
9 . 已知椭圆E:
过点
,长轴长为4.
(1)求椭圆E的方程;
(2)设O为原点,点A为椭圆E的左顶点,过点
的直线
与椭圆E交于M、N两点,且直线l与x轴不重合,直线AM、AN分别与y轴交于P、Q两点.判断
是否为定值,如果是,请求出这个定值,如果不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49cba284d675a3028d7a8d54f1f8ae70.png)
(1)求椭圆E的方程;
(2)设O为原点,点A为椭圆E的左顶点,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca0b4afd16b79370532de44989d6c43d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bab77b1212086d7b16e288f73a09560.png)
您最近一年使用:0次
10 . 已知椭圆
的一个顶点为
,焦距为2.
(1)求椭圆E的方程;
(2)过点
的直线与椭圆E交于B,C两点,过点B,C分别作直线
的垂线(点B,C在直线l的两侧).垂足分别为M,N,记
,
,
的面积分别为
,
,
,试问:是否存在常数t,使得
,
,
总成等比数列?若存在,求出t的值.若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383f12cb70ca55eba4ff012771dbfa9d.png)
(1)求椭圆E的方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d56ab70e602f2e2e291df643ab209162.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a4ea8632b4e4227131ba693deb10233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6074f4beb31fb393ae3978e0035ae16f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d23b488f961d9fde37feb7f5c497c0d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/351dedd9707c0406837e79a1f638a5fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1262db728289746a31dc4481eac1728f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
您最近一年使用:0次
2023-03-21更新
|
990次组卷
|
3卷引用:北京市丰台区2023届高三一模数学试题