名校
解题方法
1 . 已知椭圆
的一个焦点与抛物线
的焦点重合,且抛物线的准线被椭圆
截得的弦长为1,
是直线
上一点,过点
且与
垂直的直线交椭圆于
两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/d65e65fe-ce2c-45a2-a05b-60637cced1c6.png?resizew=218)
(1)求椭圆
的标准方程;
(2)设直线
的斜率分别为
,求证:
成等差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4856428c4f87eada4e504fce8cc91d1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a29ba49963134a7232fa8574105fc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/d65e65fe-ce2c-45a2-a05b-60637cced1c6.png?resizew=218)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f787aa6043d34a6fdd225637e8fc6f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8662be7d259210ad509ceac151d063c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8662be7d259210ad509ceac151d063c6.png)
您最近一年使用:0次
名校
2 . 在平面直角坐标系
中,椭圆E:
(
)的长轴长为4,左准线l的方程为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/e575d02c-657e-469a-9eb1-3fe51654a2e0.png?resizew=211)
(1)求椭圆的标准方程;
(2)直线
过椭圆E的左焦点
,且与椭圆E交于A,B两点.
①若
,求直线
的方程;
②过A作左准线l的垂线,垂足为
,点
,求证:
,B,G三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a089c207e39a24d0d82aa853ac2bbb8c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/e575d02c-657e-469a-9eb1-3fe51654a2e0.png?resizew=211)
(1)求椭圆的标准方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d79cbc472097d8905c1f11cfc357b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
②过A作左准线l的垂线,垂足为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d59d82cb961f72864994b5e8454107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
您最近一年使用:0次
2020-02-18更新
|
225次组卷
|
2卷引用:2020届江苏省镇江市高三上学期第一次调研考试(期末)数学试题
3 . 已知离心率为
的椭圆
的左顶点为
,且椭圆
经过点
,与坐标轴不垂直的直线
与椭圆
交于
两点.
(1)求椭圆
的标准方程;
(2)若直线
和直线
的斜率之积为
,求证:直线
过定点;
(3)若
为椭圆
上一点,且
,求三角形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a200ca2c4af794f4d1c6a5443830b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/480f004c98a0df86a35a48bc973f0472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e1a28d07fb1904c65774987073d6f9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8537339cca510e26eb729cd96cb57017.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
您最近一年使用:0次
2014·江西·三模
名校
解题方法
4 . 已知椭圆
的离心率为
,以原点O为圆心,椭圆的短半轴长为半径的圆与直线
相切.
(1)求椭圆C的标准方程;
(2)若直线
与椭圆C相交于A,B两点,且
.求证:
的面积为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d38f9106cef0b638e62c90afc1c523cd.png)
(1)求椭圆C的标准方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc5bd66dd6d5e09ff0893a938aed56e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd386bcd21aebfe5e25ba23a8fab7ccc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
您最近一年使用:0次
2021-01-27更新
|
284次组卷
|
7卷引用:2014届江西师大附中高三三模数学文科数学试卷
(已下线)2014届江西师大附中高三三模数学文科数学试卷(已下线)2014届甘肃省兰州一中高考模拟一文科数学试卷2016届河北省正定中学高三上第五次月考理科数学试卷2016-2017学年湖北省重点高中联考协作体高二下学期期中考试数学(理)试卷黑龙江省宾县一中2019-2020学年高二上学期第一次月考数学(文)试卷新疆乌鲁木齐市第七十中学2020-2021学年高二上学期期末考试数学(理)试题山东省潍坊市安丘市2022-2023学年高二上学期期末数学试题
解题方法
5 . 如图,已知焦点在x轴上的椭圆
有一个内含圆x2+y2=
,该圆的垂直于x轴的切线交椭圆于点M,N,且
(O为原点).
![](https://img.xkw.com/dksih/QBM/2020/5/27/2471326757642240/2471777217118208/STEM/f1d0c915de8e466a94ce4f0fc8184910.png?resizew=138)
(1)求b的值;
(2)设内含圆的任意切线l交椭圆于点A、B.求证:
,并求|AB|的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce125e013e6bf5d17b472fa040cc5810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a391005600bdd69c96750589f9adb048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328e4cc042e5177d41c17c3679164ba5.png)
![](https://img.xkw.com/dksih/QBM/2020/5/27/2471326757642240/2471777217118208/STEM/f1d0c915de8e466a94ce4f0fc8184910.png?resizew=138)
(1)求b的值;
(2)设内含圆的任意切线l交椭圆于点A、B.求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bfe4da6f357e55927d25d9d27ea8717.png)
您最近一年使用:0次
名校
6 . 已知离心率为
的椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0fe9059acc47d2447576e1260c4622.png)
的左顶点为A,且椭圆E经过
与坐标轴不垂直的直线l与椭圆E交于C,D两点,且直线AC和直线AD的斜率之积为
.
(I)求椭圆E的标准方程;
(Ⅱ)求证:直线l过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0fe9059acc47d2447576e1260c4622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f82eb4ba631d0f50d848aa6e576b379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/480f004c98a0df86a35a48bc973f0472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e1a28d07fb1904c65774987073d6f9d.png)
(I)求椭圆E的标准方程;
(Ⅱ)求证:直线l过定点.
您最近一年使用:0次
2020-01-29更新
|
430次组卷
|
4卷引用:2020届辽宁省大连市高三双基测试数学(文)试题
7 . 如图,已知椭圆
,直线
,直线
与椭圆
交于不同的两点
,点
和点
关于
轴对称,直线
与
轴交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/af0cf0d2-6b94-4cf0-bddf-5c44fdc88650.png?resizew=183)
(1)若点
是椭圆
的一个焦点,求该椭圆的长轴的长度;
(2)若
,且
,求
的值;
(3)若
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc0c21cbc2a43691ccb00e2cbb90eba7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42be8ebafe9bfc7b6406574a8fc72997.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/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe1a6ce0b35896c8a1c687a4376e71f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e712f90d51101dfdd8956b9a4ef3682.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/af0cf0d2-6b94-4cf0-bddf-5c44fdc88650.png?resizew=183)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/310f780f4f03699023b1322a1e002539.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71785912ec3f4fd811c3290f26040b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee7c4022cc464e58e54d9508571a21b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
8 . 如图,圆
与
轴切于点
,与
轴正半轴交于
两点.点
在点
的下方,且
.
![](https://img.xkw.com/dksih/QBM/2020/5/2/2453956687749120/2454864123715584/STEM/bed54e9d2ce04d7eb21e1f61b3116f08.png?resizew=218)
(1)求圆
的方程;
(2)过点
作一条直线与椭圆
相交于
两点,连接
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b45d68e7ef26c34a15988283610c95c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7490886e2807c7b8a4fa57d99c4dc3a.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/03f4840c22eb33c7e7115ff911a96be6.png)
![](https://img.xkw.com/dksih/QBM/2020/5/2/2453956687749120/2454864123715584/STEM/bed54e9d2ce04d7eb21e1f61b3116f08.png?resizew=218)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb398137779190b35492d9f06d5fbc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35acbc816706f5349e123e12eb25ea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d5ce23462dfd28929430b74b9590940.png)
您最近一年使用:0次
9 . 已知椭圆
:
的左、右焦点为
,
,上、下顶点为
,
,四边形
是面积为2的正方形.
(1)求椭圆的标准方程;
(2)已知点
,过点
的直线
与椭圆交于
,
两点,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/087e4ab6d26e3d799c227b8257daa53a.png)
(1)求椭圆的标准方程;
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d56ab70e602f2e2e291df643ab209162.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2198dc08d2afc88a01d0affcd7f46053.png)
您最近一年使用:0次
名校
解题方法
10 . 在平面直角坐标系
中,已知椭圆
:
,其焦点到相应准线的距离为
,离心率为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/25/24c53782-7108-4baa-b96a-b1e32a178ecd.png?resizew=272)
(1)求椭圆
的标准方程;
(2)如图所示
,
是椭圆
上两点,且
的面积
,设射线
,
的斜率分别为
,
.
①求
的值;
②延长
到
,使得
,且
交椭圆
于
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/25/24c53782-7108-4baa-b96a-b1e32a178ecd.png?resizew=272)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)如图所示
![](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/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b881044b5c73db6fcce110525741b02.png)
②延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1eb7216d8edef35f4c551518b43c41a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02ba9d3698ec699f3b61456f4c9830d.png)
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