解题方法
1 . 已知椭圆
的左、右焦点分别为
、
,焦点为
的抛物线
的准线被椭圆
截得的弦长为
.
(1)求椭圆
的标准方程;
(2)若点
、
到直线
的距离之积为
,求证:直线
与椭圆
相切.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.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/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aa0e479e23b9dab41ed1eb216d838d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若点
![](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/3d7d436bb96d03f111de6850cf2c7965.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2020-03-12更新
|
841次组卷
|
3卷引用:2020届江西省名校学术联盟高三教学质量检测数学(文)试题
名校
2 . 已知椭圆
:
的长轴长为4,且点
在
上.
(1)求椭圆的方程;
(2)直线
过
的左焦点且与
交于
,
两点,若
,求
的方程.
![](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/f39eb7186f7252fff8782f1ec117f839.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求椭圆的方程;
(2)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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4984b5f0975dab13854dd1addc8e9d28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2020-03-19更新
|
182次组卷
|
2卷引用:江西省遂川中学2023届高三一模数学试题(文科)
2013·山东临沂·一模
名校
解题方法
3 . 在平面直角坐标系
中,已知椭圆
的离心率
,且椭圆C上一点N到
距离的最大值为4,过点
的直线交椭圆C于点A、B.
(1)求椭圆C的方程;
(2)设P为椭圆上一点,且满足
(O为坐标原点),当
时,求实数t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c38d8390234e0cb46172c8e2b02ea516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de85df85401e7e8da683ea4a784963c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a291e0d0e2f620a15826a1aa3c04bc37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7908e8e2ca67ad0f739860222423950.png)
(1)求椭圆C的方程;
(2)设P为椭圆上一点,且满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dfccfba0f6b1c0762a9cb37c3f6fff0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4f263df3ae9b354401c14685be256f.png)
您最近一年使用:0次
2021-06-21更新
|
1729次组卷
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15卷引用:2014届江西省宜春市高三考前模拟文科数学试卷
(已下线)2014届江西省宜春市高三考前模拟文科数学试卷(已下线)2013届山东临沂高三5月高考模拟理科数学试卷山东师范大学附属中学2021届高三数学打靶模拟试题山东省济南市2021届高三高考数学模拟试题(已下线)2014届河北省唐山一中高三上学期期中考试理科数学试卷(已下线)2014届河北衡水中学高三上学期期中考试理科数学试卷广东省广州市华南师范大学附属中学2018届高三综合测试(二) 理科数学试卷黑龙江省双鸭山市第一中学2017-2018学年高二下学期开学考试数学(理)试题山西省长治市第二中学校2019-2020学年高二上学期12月月考数学(理)试题广东省广州市华南师大附中2021-2022学年高二上学期期中数学试题(已下线)2022年新高考北京数学高考真题变式题9-12题(已下线)2022年新高考北京数学高考真题变式题19-21题重庆市渝高中学校2022-2023学年高二上学期期末数学试题广东省东莞市光明中学2022-2023学年高二上学期期中数学试题浙江省嘉兴市第一中学2023-2024学年高二上学期12月阶段测试数学试卷
名校
4 . 在平面直角坐标系
中,椭圆
过点
,焦点
,圆
的直径为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/2805fa57-83cf-4509-a9ee-252a0472f7c5.jpg?resizew=184)
(1)求椭圆
及圆
的方程;
(2)设直线
与圆
相切于第一象限内的点
,直线
与椭圆
交于
两点.若
的面积为
,求直线
的方程.
![](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/e38398209c6e596145044d5afdea2e80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/871868260c78a20767eae39bcdb97476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643ef7d761de0e794fc39937dc72ac6a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/2805fa57-83cf-4509-a9ee-252a0472f7c5.jpg?resizew=184)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/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/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf116c552e0441e49c9845a63e26391c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2019-06-05更新
|
1563次组卷
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3卷引用:【全国百强校】江西省抚州市临川第一中学2019届高三下学期考前模拟考试文科数学试题
名校
5 . 已知椭圆
的离心率为
,以原点为圆心,椭圆的短半轴为长为半径的圆与直线
相切,过点
的直线
与椭圆
相交于
两点.
(1)求椭圆
的方程;
(2)若原点
在以线段
为直径的圆内,求直线
的斜率
的取值范围.
![](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/d38f9106cef0b638e62c90afc1c523cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af74113f38fffeed8075e57d7f9d2533.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)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2019-05-09更新
|
1350次组卷
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9卷引用:【市级联考】江西省宜春市 2019 届高三4月模拟考试数学(理科)试题
6 . 已知椭圆
的方程为
,
,
为椭圆
的左右顶点,
为椭圆
上不同于
.
的动点,直线
与直线
,
分别交于
,
两点,若
,则过
,
,
三点的圆必过
轴上不同于点
的定点,其坐标为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def6b1847098dd39d653c77786cb4eba.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/39cc033406da2cdd342308972c6701f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.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/fc3050e2c54f4301840e941118c8a584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
您最近一年使用:0次
7 . 已知椭圆C的中心在原点,焦点在x轴上,D(0,2)为椭圆C短轴的一个端点,F为椭圆C的右焦点,线段DF的延长线与椭圆C相交于点E,且|DF|=3|EF|.
(1)求椭圆C的标准方程;
(2)设直线l与椭圆C相交于A,B两点,O为坐标原点,若直线OA与OB的斜率之积为-
,求
的取值范围.
(1)求椭圆C的标准方程;
(2)设直线l与椭圆C相交于A,B两点,O为坐标原点,若直线OA与OB的斜率之积为-
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/103070abee09399f1e9510a75c3ba9e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee6c67600fb352daa8f4322534c172f.png)
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8 . 如图,椭圆
:
与圆
:
相切,并且椭圆
上动点与圆
上动点间距离最大值为
.
![](https://img.xkw.com/dksih/QBM/2019/3/3/2152705431011328/2152985821978624/STEM/620fdc7e56914b4caa5cb62e8c333416.png?resizew=215)
(1)求椭圆
的方程;
(2)过点
作两条互相垂直的直线
,
,
与
交于
两点,
与圆
的另一交点为
,求
面积的最大值,并求取得最大值时直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/945bd49504668cacaa7af9185731c0c8.png)
![](https://img.xkw.com/dksih/QBM/2019/3/3/2152705431011328/2152985821978624/STEM/620fdc7e56914b4caa5cb62e8c333416.png?resizew=215)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71fb572a6f07dcade5332bea766020f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4201d3bead2e48cc80052b1418f23db9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
您最近一年使用:0次
2019-03-04更新
|
865次组卷
|
3卷引用:【市级联考】江西省南昌市2019届高三第一次模拟考试数学(理)试题
名校
9 . 已知椭圆
的离心率为
,点
在椭圆D上.
(1)求椭圆D的标准方程;
(2)过y轴上一点E(0,t)且斜率为k的直线l与椭圆交于A,B两点,设直线OA,OB(O为坐标原点)的斜率分别为kOA,kOB,若对任意实数k,存在λ∈[2,4],使得kOA+kOB=λk,求实数t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3b68df6f55e6ec3202f0a5bfb5b4400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f22961893bf928b16102914cb231c78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efef3024a59f58f5dc42fc0f294481a4.png)
(1)求椭圆D的标准方程;
(2)过y轴上一点E(0,t)且斜率为k的直线l与椭圆交于A,B两点,设直线OA,OB(O为坐标原点)的斜率分别为kOA,kOB,若对任意实数k,存在λ∈[2,4],使得kOA+kOB=λk,求实数t的取值范围.
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2019-03-30更新
|
871次组卷
|
7卷引用:【市级联考】江西省上饶市2019届高三第二次模拟考试数学(文)试题
名校
10 . 已知A(-2,0),B(2,0)为椭圆C的左、右顶点,F为其右焦点,P是椭圆C上异于A,B的动点,且△APB面积的最大值为
.
(Ⅰ)求椭圆C的方程;
(Ⅱ)直线AP与椭圆在点B处的切线交于点D,当点P在椭圆上运动时,求证:以BD为直径的圆与直线PF恒相切.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
(Ⅰ)求椭圆C的方程;
(Ⅱ)直线AP与椭圆在点B处的切线交于点D,当点P在椭圆上运动时,求证:以BD为直径的圆与直线PF恒相切.
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2018-08-06更新
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843次组卷
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5卷引用:【全国百强校】江西省新余市第四中学2018届高三适应性考试数学(文)试题