名校
解题方法
1 . 给定椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
,称圆心在原点
,半径为
的圆是椭圆
的“准圆”.若椭圆
的一个焦点为
,其短轴上的一个端点到
的距离为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/a2b7747d-e057-4ac0-9bb6-537bc0eab1a7.png?resizew=181)
(1)求椭圆
的方程和其“准圆”方程;
(2)点
是椭圆
的“准圆”上的动点,过点
作椭圆的切线
交“准圆”于点
.
①当点
为“准圆”与
轴正半轴的交点时,求直线
的方程并证明
;
②求证:线段
的长为定值.
![](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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da001dad7941e6c9858637d7b62cec59.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/3a76a3717e0289796779ec7575b4f9b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/a2b7747d-e057-4ac0-9bb6-537bc0eab1a7.png?resizew=181)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)点
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
①当点
![](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/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce08b357f11ef44c3e8207ac574422a.png)
②求证:线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
名校
解题方法
2 . 已知椭圆
(
)的上顶点为
,左焦点为
,离心率为
,直线
与圆
相切.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/d29c3e71-142e-4cd5-a45e-f9c10324a489.png?resizew=183)
(1)求椭圆
的标准方程;
(2)设过点
且斜率存在的直线
与椭圆
相交于
两点,线段
的垂直平分线交
轴于点
,试判断
是否为定值?并说明理由.
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28123e129b6426c9a5f31ad8ec2465b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/d29c3e71-142e-4cd5-a45e-f9c10324a489.png?resizew=183)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设过点
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.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/252531955c6872a2764fbeea4ec8a557.png)
您最近一年使用:0次
2020-02-12更新
|
755次组卷
|
3卷引用:2020届江西省九江市高三第一次模拟数学理科试题
3 . 已知椭圆
与圆
:
有且仅有两个公共点,点
、
、
分别是椭圆
上的动点、左焦点、右焦点,三角形
面积的最大值是
.
(1)求椭圆
的方程;
(2)若点
在椭圆第一象限部分上运动,过点
作圆
的切线
,过点
作
的垂线
,求证:
,
交点
的纵坐标的绝对值为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6272593f00b7e1293855f2aa7941a46d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49137970108f50350a3211aa0281faaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd5a8e1bc9748e5519dcd9981b7eb251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.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/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
2012·福建福州·一模
名校
4 . 如图,圆
与
轴相切于点
,与
轴正半轴相交于
两点(点
在点
的下方),且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/9f1e1599-2835-4ff8-ad46-aed81e934d71.png?resizew=167)
(1)求圆
的方程;
(2)过点
任作一条直线与椭圆
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/c6614916203fe0146d6797138da3db4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.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/cbc5931d25e50c27e61e78347f9370e6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/9f1e1599-2835-4ff8-ad46-aed81e934d71.png?resizew=167)
(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/c763113a1fc48e8acc83787b8cd24eec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729cf1d18cbb0ff509b51be7c445c34e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d5ce23462dfd28929430b74b9590940.png)
您最近一年使用:0次
2016-12-01更新
|
1802次组卷
|
21卷引用:2016届江西省高安中学等九校高三下学期联考文科数学试卷
2016届江西省高安中学等九校高三下学期联考文科数学试卷【校级联考】新余四中、上高二中2019届高三第一次联考数学(文)试题(已下线)2012届福建省福州市高三综合练习理科数学试卷(已下线)2012届福建省福州市高三综合练习文科数学试卷2015届陕西西北工业大学附中高三下学期四模考试理科数学试卷2015届陕西西北工业大学附中高三下学期四模考试文科数学试卷2016届山西省康杰中学等校高三上学期第二次联考文科数学试卷2015-2016学年广东广州执信中学高二下期末文科数学试卷2017届甘肃高台县一中高三文上学期检测五数学试卷2017届甘肃省高台县第一中学高三上学期期末考试文数试卷2017届湖北省黄冈市高三3月份质量检测数学(文)试卷2017届湖北省黄冈市高三3月份质量检测数学(理)试卷2017届宁夏中卫市高三第二次模拟考试数学(文)试卷甘肃省武威第二中学2018届高三上学期期末考试数学(文)试题【全国校级联考】峨眉山市第七教育发展联盟2018届高考适应性考试文科数学试题【市级联考】湖南省衡阳市2019届高三下学期第一次联考数学(文)试题【全国百强校】湖南省衡阳市第一中学2018-2019学年高二下学期第一次月考数学(文)试题上海市延安中学 2018-2019学年高二上学期期末数学试题2019届湖南省衡阳市高三第一次模拟文科数学试题河南省焦作市第一中学2022-2023学年高二下学期期中数学试题湖南省长沙市雅礼中学2024届高三下学期月考(七)数学试题
名校
5 . 已知椭圆
的两个焦点分别为
,以椭圆短轴为直径的圆经过点
.
(1)求椭圆
的方程;
(2)过点
的直线
与椭圆
相交于
两点,设点
,直线
的斜率分别为
,问
是否为定值?并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae13b2a96f91ab64fb4948de2b0ae10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5a724be4277e56ec8a770623aaa745e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90fbad665fb13f72f65a071b9ea78318.png)
(1)求椭圆
![](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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae1567d8f98fabc1a3948f8602cc5e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c05526cb76b8ad1cd9ca14fb598e8c4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0007b7a28aedee15e5f8388a15d1a7d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfe0ea445fc6b756b34b56a95e4d0381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5117784d5f7629ba7d20788328e6a1cd.png)
您最近一年使用:0次
2016-12-03更新
|
1985次组卷
|
18卷引用:江西省南昌市实验中学2017-2018学年高二上学期期中文科数学试题
江西省南昌市实验中学2017-2018学年高二上学期期中文科数学试题2015届四川省成都石室中学高三上期期中文科数学试卷2016届四川省成都市七中高三考试试卷2017届湖南长沙长郡中学高三入学考试数学(理)试卷河北省大名县第一中学2018届高三(实验班)上学期第一次月考数学(文)试题湖南省长沙市长郡中学2018届高三第四次月考数学(理)试题黑龙江省大庆实验中学2017-2018学年高二上学期期末考试数学(理)试题【全国百强校】四川省成都外国语学校2019届高三下学期3月月考试题 数学(文科)试题【全国百强校】四川省成都市成都外国语学校2019届高三3月月考数学(理)试题四川省成都外国语学校2019届高三下学期3月月考试题 数学(理)试题四川省成都市第七中学2019-2020学年高三上学期一诊模拟数学(文)试题四川省成都市第七中学2019-2020学年高三上学期一诊模拟数学(理)试题广东省深圳市红岭中学2020届高三上学期第二次统一考试数学(理)试题普通高等学校招生国统一考试2020-2021学年高三上学期 数学(文)考向卷(七)普通高等学校招生国统一考试 2020-2021学年高三上学期 数学(理)考向卷(七)(已下线)大题专练训练29:圆锥曲线(探索性问题1)-2021届高三数学二轮复习四川省内江市威远中学2020-2021学年高三1月月考数学(文)试题(已下线)专题16 圆锥曲线常考题型04——定值问题-【重难点突破】2021-2022学年高二数学上册常考题专练(人教A版2019选择性必修第一册)
6 . 已知椭圆
上一点
与椭圆右焦点的连线垂直于
轴,直线
与椭圆
交于
两点(
两点均不在坐标轴上)
(1)求椭圆
的标准方程;
(2)设
为坐标原点,若
的面积为
,试判断直线
与
的斜率之积是否为定值?若是,求出该定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0dfb290b1a84f670549554a0c988593.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc5bd66dd6d5e09ff0893a938aed56e.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/01c74a907dda6bb7d9d56d009d9df253.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
您最近一年使用:0次
名校
解题方法
7 . 已知椭圆
的中点在原点,焦点在
轴上,离心率等于
,它的一个顶点恰好是抛物线
的焦点.
(1)求椭圆
的方程;
(2)已知点
,
在椭圆上,点
、
是椭圆上不同的两个动点,且满足
,试问直线
的斜率是否为定值,请说明理由.
![](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/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85027cef6f6920c2a38edec6ba5e7fcf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/4/952db069-18f5-49b8-800d-741b81fc0059.png?resizew=151)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c7f6a03826a5ad351c1f7ca553a6945.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/561fbd802d8f840ebb1086a97aca3f70.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/198c249705ffdee268cd836f382e3855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2020-10-08更新
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669次组卷
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3卷引用:江西省上高二中2020-2021学年高二上学期第一次月考数学(文)试题
8 . 已知点
, ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22f7ee368de7b0400209dec3d64179d6.png)
为平面直角坐标系
中的点,点P为线段EF的中点,当
变化时,点P形成的轨迹
与x轴交于点A,B(A点在左侧),与y轴正半轴交于点C.
(1)求P点的轨迹
的方程;
(2)设点M是轨迹
上任意一点(不在坐标轴上),直线CM交x轴于点D,直线BM交直线AC于点N.
①若D点坐标为
,求线段CM的长;
②求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f79b9ee65093831dca8ff0a936fac34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22f7ee368de7b0400209dec3d64179d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e92f0c1cebf584382fd73d8bf0e42830.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e73b7984be01197112474ab97758d8c0.png)
(1)求P点的轨迹
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e73b7984be01197112474ab97758d8c0.png)
(2)设点M是轨迹
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e73b7984be01197112474ab97758d8c0.png)
①若D点坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a80fd8b6f1f56304198b3fe89accd3f.png)
②求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/855138c6eb56e09732b1383dd6a6a6ca.png)
您最近一年使用:0次
2016-12-03更新
|
1921次组卷
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2卷引用:2015届江西省名校学术联盟师大附中等高三调研理科数学卷
名校
9 . 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:山东省烟台市第一中学2019-2020学年高三上学期第一次联考数学试题
名校
10 . 已知椭圆
的左、右焦点分别为
,且
,
是椭圆上一点.
(1)求椭圆
的标准方程和离心率
的值;
(2)若
为椭圆
上异于顶点的任一点,
、
分别为椭圆的右顶点和上顶点,直线
与
轴交于点
,直线
与
轴交于点
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf1a02bd1f06cf451aa53467f7102e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/950e6108856cfb8d45b1a1e6aa6900e9.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(2)若
![](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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a354c472e3de0d03a4d288bb7b62a22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77ce31833750a319b3c2db7837a110d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2867d22611f48131887c1124b73d452b.png)
您最近一年使用:0次
2019-06-15更新
|
759次组卷
|
3卷引用:江西省上饶市横峰中学2018-2019学年高二下学期第三次月考数学(理)试题
江西省上饶市横峰中学2018-2019学年高二下学期第三次月考数学(理)试题江西省新干中学2022-2023学年高二上学期期末考试数学试题(已下线)第五篇 向量与几何 专题7 共轭直径微点1 共轭直径(一)