名校
解题方法
1 . 已知点
,点
是圆
:
上任意一点,线段
的垂直平分线交
于点
,点
的轨迹记为曲线
.
(1)求曲线
的方程;
(2)过
的直线交曲线
于不同的
,
两点,交
轴于点
,已知
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e810cb506e1746a0a49610e0d897f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eea5208dc56a39a66bbfb1fe56c687bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f541f7ae7c39082d202efd28805c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c2293f93791a597bf0162411f3395f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dddec20d9f5ed8f7983efc37bdb3cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/035a57408d63b2f9caebfadbe22f7796.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd1f0ace9ca0b79929e73af6c201c2e.png)
您最近一年使用:0次
2020-07-07更新
|
360次组卷
|
4卷引用:贵州省铜仁市伟才学校2019-2020学年高二下学期期末考试数学(理)试题
2 . 已知椭圆
离心率为
,且椭圆上的一点与两个焦点构成的三角形周长为
.
(1)求椭圆C的方程;
(2)已知直线
与椭圆C交于A,B两点,若点
的坐标为
,则
是否为定值?若是,求该定值,若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1734bef717187708351c1be3bd035071.png)
(1)求椭圆C的方程;
(2)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1d0aafd52e26c241c46d0206f42f415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efedc7aae4bd639d1de2d0f691e6c11c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8d24822b6415ac090b31fe5010641cf.png)
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2020-02-22更新
|
214次组卷
|
6卷引用:【全国百强校】贵州省凯里市第一中学2017-2018学年高二下学期期末考试数学(文)试题
【全国百强校】贵州省凯里市第一中学2017-2018学年高二下学期期末考试数学(文)试题(已下线)2018年11月24日 《每日一题》文数人教版一轮复习-周末培优(已下线)2019年11月23日《每日一题》一轮复习文数-周末培优福建省厦门双十中学2018-2019学年高二下学期第二次月考数学(文)试题四川省宜宾市叙州区第二中学校2020-2021学年高三上学期第一次月考数学(理)试题四川省宜宾市叙州区第二中学校2020-2021学年高三上学期第一次月考数学(文)试题
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3 . 已知椭圆
的左、右焦点分别为
,离心率为
,直线
与椭圆C交于A,B两点,且
.
(1)求椭圆C的方程.
(2)不经过点
的直线
被圆
截得的弦长与椭圆C的长轴长相等,且直线
与椭圆C交于D,E两点,试判断
的周长是否为定值?若是,求出定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98214cac757430c9d5775ad0dadb185a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2f3fa679bb55ded25a9b72a8e788cb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2015049cd170e89070ec78e4497d381a.png)
(1)求椭圆C的方程.
(2)不经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8013a291d60dcc877a0f53248412b48e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b93cf4a69bbd3bda95180fa576d7e110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ab9853938f6c6bd6ef6385bbfc1949c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2edae01494aa24d0489e473348b0742.png)
您最近一年使用:0次
2019-10-21更新
|
825次组卷
|
5卷引用:贵州省贵阳市清华中学2023-2024学年高二下学期4月月考数学试题
名校
4 . 已知椭圆
的离心率为
,且过点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/7908d5af-7c3d-4582-82aa-4eb2338f393a.png?resizew=185)
(Ⅰ)求椭圆的标准方程;
(Ⅱ)四边形
的顶点在椭圆上,且对角线
、
过原点
,若
,
(1)求
的最值;
(2)求证;四边形
的面积为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f0e2297e289632ffc211bd20e2e772e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f78c38805c09dcfbcc42103308975a74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e528e7a9863af98de9e673152d4ed8a7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/7908d5af-7c3d-4582-82aa-4eb2338f393a.png?resizew=185)
(Ⅰ)求椭圆的标准方程;
(Ⅱ)四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e5180fbb57904af6ae024f85b4296e5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f51e51dd6a323a1fd3a11bb5ffbef8.png)
(2)求证;四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
您最近一年使用:0次
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5 . 已知椭圆
左右焦点为
,左顶点为A(-2.0),上顶点为B,且∠
=
.
(1)求椭圆C的方程;
(2)探究
轴上是否存在一定点P,过点P的任意直线与椭圆交于M、N不同的两点,M、N不与点A重合,使得
为定值,若存在,求出点P;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca2edafe0d1ae71d22287fa55f83cac5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/742211c2ef01c6638c4db28003abbd51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
(1)求椭圆C的方程;
(2)探究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e6f0e94393fc6bbd9b4b83ede534ac.png)
您最近一年使用:0次
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6 . 直线
与椭圆
交于
,
两点,已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9856ad2a8dd1b673ec2cfa9ee0a1eaff.png)
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/184c6736108865aa9ba3680f3d50526a.png)
,若椭圆的离心率
,又经过点
,
为坐标原点.
(1)求椭圆的方程;
(2)当
时,试问:
的面积是否为定值?如果是,请给予证明;如果不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb223b8777ab973970491bf0dcc6806.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6ff82ebdfad5e7de1c7487b0b817a7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a53e311ee0b5085e7e5a45c606daa5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9856ad2a8dd1b673ec2cfa9ee0a1eaff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00d6c97c7d9e54545d84861512048f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/184c6736108865aa9ba3680f3d50526a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f4e280b9eb1dc2272d37052b32e258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de85df85401e7e8da683ea4a784963c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f8cd13928f5da237b624d6607129ec9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)求椭圆的方程;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d45632b3ca6ab6c0b05df0d5a838c375.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd2981bf2261343f905ec1b5355a3c4.png)
您最近一年使用:0次
2018-12-02更新
|
737次组卷
|
4卷引用:【市级联考】贵州省遵义市2019届高三第一次联考理科数学试题
名校
7 . 已知椭圆
的离心率为
,且过点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/5923ba4e-cdf4-4a38-a603-c2759f56dfb7.png?resizew=180)
(1)求椭圆的标准方程;
(2)四边形
的顶点在椭圆上,且对角线
、
过原点
,若
,求证;四边形
的面积为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f21c7162941d2b54ebafb1795599195.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/5923ba4e-cdf4-4a38-a603-c2759f56dfb7.png?resizew=180)
(1)求椭圆的标准方程;
(2)四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/857d0d2010f31e9327d640bf0ee37e8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
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8 . 已知椭圆C:
的左、右焦点分别为
,
,点M为短轴的上端点,
,过
垂直于x轴的直线交椭圆C于A,B两点,且
.
1
求椭圆C的方程;
2
设经过点
且不经过点M的直线l与C相交于G,H两点
若
,
分别为直线MH,MG的斜率,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a9d253c2fdc02bde4712860f2aab134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09a8ac969e5cec3be6abf4ff44c692e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce6758b8b074d33ea9e82818593656e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4010e432b77375b8d3ecb789ed7a8ea3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce6758b8b074d33ea9e82818593656e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0842c9478850671da3a4fd76387ae02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/782c1cdb3754f197f4bda2cdad77588e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f375dc5addedc5f9fbb72d566939c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731f980ccb6f902d460d0ea2920bfe2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5117784d5f7629ba7d20788328e6a1cd.png)
您最近一年使用:0次
2018-06-15更新
|
580次组卷
|
4卷引用:【全国百强校】贵州省铜仁市思南中学2017-2018学年高二下学期第二次月考数学(理)试题
名校
9 . 已知椭圆
过点
,椭圆
的左焦点为
,右焦点为
,点
是椭圆
上位于
轴上方的动点,且
,直线
与直线
分别交于
两点.
(1)求椭圆
的方程及线段
的长度的最小值;
(2)
是椭圆
上一点,当线段
的长度取得最小值时,求
的面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef233ad3db01fa3ce9ee94eaad8e64e.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/dad2a36927223bd70f426ba06aea4b45.png)
![](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/28fcf8d60e598c7a150dd1a51152b0cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcaebaf8ceed245eba896f36d8ff14b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9355031ea0b2dc9cef3777621bc6d38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c0f067a2a348ceb24a408f82992eab8.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4cfb1f4ab896cf8e0aa7b208a134459.png)
您最近一年使用:0次
2017-10-15更新
|
1383次组卷
|
2卷引用:贵州省黔东南州2018届高三上学期第一次联考数学(文)试题
12-13高三上·山东青岛·期末
名校
10 . 已知椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
的离心率为
,椭圆短轴的一个端点与两个焦点构成的三角形的面积为
,直线l的方程为:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae077b198c3e6a891ca7c5eb6d53482a.png)
(Ⅰ)求椭圆
的方程;
(Ⅱ)已知直线l与椭圆
相交于
、
两点
①若线段
中点的横坐标为
,求斜率
的值;
②已知点
,求证:
为定值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333af6f9aa2391b81882eef6040a78b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae077b198c3e6a891ca7c5eb6d53482a.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)已知直线l与椭圆
![](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)
①若线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
②已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/258d58540143498fc24b8e7ce4da2121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3cd639d381fb8f5675d8528ef19e0ae.png)
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2019-01-30更新
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