名校
解题方法
1 . 如图,已知椭圆
,其焦距为4,过椭圆长轴上一动点
作直线交椭圆于
、
,直线
、
交于点
,已知
,则椭圆的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347b68f42934c74e0d759a67613a1da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715abe79425e4e4f2a35fdd745ba653b.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/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/468fc3e395fa3b681c3da37edbe229a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25ec7f5d958d54f9642eecec56e7540.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/f78746a7-c640-4a95-b14e-790feb628e1b.png?resizew=189)
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2024-01-11更新
|
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2卷引用:湖北省武汉市东湖中学2023-2024学年高二上学期期中考试数学试题
2 . 已知点
是椭圆
上任意一点,若圆
上存在点
,使得
,则椭圆离心率的最大值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7b4bcb812c997db47214cb52c905f99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/220414a39a310f59763815d9c975384d.png)
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3 . “蒙日圆”涉及几何学中的一个著名定理,该定理的内容为:椭圆上任意两条互相垂直的切线的交点,必在一个与椭圆同心的圆上.称此圆为该椭圆的“蒙日圆”,该圆由法国数学家加斯帕尔
蒙日(1746-1818)最先发现.若椭圆
的左、右焦点分别为
,
为椭圆
上一动点,过
和原点作直线
与椭圆
的蒙日圆相交于
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd74665fa278d2b6aff0995efdccea01.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40faea8cb018321028ec449e52477ea6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae0a99abaec92d5cc53e1f29fc2b2882.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4e6c7a77025f8ccfa4fd05512a13ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94165c5047e68e952df7a8dc6dc32fda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd74665fa278d2b6aff0995efdccea01.png)
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湖北省新高考联考协作体2022-2023学年高二上学期期中模拟数学试题河南省南阳市第六完全学校高级中学2022-2023学年高二上学期10月月考数学试题(已下线)第01讲 椭圆(练)广东省广州市四校联考2022-2023学年高二上学期期中数学试题浙江省平湖市当湖高级中学2022-2023学年高二上学期12月阶段测试数学试题江苏省徐宿联考2023-2024学年高二上学期第一次联考数学试题(已下线)第三章 圆锥曲线的方程【单元提升卷】-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(人教A版2019选择性必修第一册)(已下线)大招19蒙日圆浙江省宁波市鄞州中学2023-2024学年高二上学期9月月考数学试题
4 . 已知椭圆
,过椭圆的上顶点
作一条与坐标轴都不垂直的直线与椭圆交于另一点
,
关于
轴的对称点为
. 若直线
,
与
轴交点的横坐标分别为
,
. 则它们的积
为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a5f4b244b3b0799cfb1994364036eb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1019d4ad2e3fb4a7abb66e0e9e55b556.png)
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5 . 已知椭圆C:
的长轴长为4,若点P是椭圆C上任意一点,过原点的直线l与椭圆交于M,N两点,记直线PM,PN的斜率为
,
,若
,则椭圆的方程为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ddcc2a96195973e9cd1dda4246f2ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebd63b865119ffb55d2725a4cbdc904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35e7563ecdfb5e68d2b1ddc3230a901a.png)
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名校
6 . 已知椭圆C:
1(a
b
0)的左、右焦点分别为F1,F2,点P为椭圆C上不与左右顶点重合的动点,设I,G分别为△PF1F2的内心和重心.当直线IG的倾斜角不随着点P的运动而变化时,椭圆C的离心率为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bd4fd9bfd38c5361d55735bfe4bb2d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392cdb9d30684cce244bef94b8d861b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392cdb9d30684cce244bef94b8d861b9.png)
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2020届湖北省部分省级示范性重点中学教科研协作体高三统一联合考试数学(理)试题(已下线)第2章《圆锥曲线与方程》章节复习巩固(提高练)-2021-2022学年高二数学同步训练精选新题汇编(人教A版选修2-1)辽宁省沈阳市第二中学2022届高三下学期第四次模拟考试数学试题(已下线)专题27 圆锥曲线与四心问题 微点1 圆锥曲线与重心问题(已下线)专题9-3 求椭圆双曲线离心率题型归类-3河北省衡水中学2023届高三上学期第三次综合素养评价数学试题河南省信阳市新县高级中学2023届高三第一轮适应性考试(二)数学(理科)试题
7 . 已知椭圆T:
的离心率为
,右焦点为
,三角形
的三个顶点都在椭圆
上,设它的三条边
的中点分别为
,且三条边所在直线的斜率分别
、
、
,且
、
、
均不为
.
为坐标原点,若直线
的斜率之和为1,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dddcb841e17cc8df9c1aa78bc1b12c1.png)
______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe3dbf74db5bba236ed0daeaf7d0225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb46a5e933ade764ceb56830867ea3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ce72f37c204200410ce07fb8986d54a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dddcb841e17cc8df9c1aa78bc1b12c1.png)
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名校
8 . 已知椭圆
:
的离心率为
,三角形
的三个顶点都在椭圆
上,设它的三条边
、
、
的中点分别为
、
、
,且三条边所在直线的斜率分别
、
、
,且
、
、
均不为
.
为坐标原点,若直线
、
、
的斜率之和为
,则
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dddcb841e17cc8df9c1aa78bc1b12c1.png)
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7卷引用:湖北省随州市2018-2019学年高二下学期期末考试数学(理)试题
名校
9 . 在直角坐标系
中,椭圆
的方程为
,左右焦点分别为
,
,设
为椭圆
上位于
轴上方的一点,且
轴,
、
为椭圆
上不同于
的两点,且
,设直线
与
轴交于点
,则
的取值范围为____ .
![](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/6cae00bdc6f8b564b6b15b32572c848b.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/acc290b44635265137fdf13146b6a6d9.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/c47fb32b931ef1125d7a241d1c829e98.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a896e2a27b483e3a8384b6b46a1d54a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/489d120a817a6ecd28874209fefaf3b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
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2019-03-11更新
|
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3卷引用:【市级联考】湖北省恩施州2019届高三2月教学质量检测数学(文)试题
【市级联考】湖北省恩施州2019届高三2月教学质量检测数学(文)试题重庆市杨家坪中学2019-2020学年高二上学期第二次月考数学试题(已下线)专题31 圆锥曲线中的定点、定值、探索性问题-冲刺2020高考跳出题海之高三数学模拟试题精中选萃
10 . 已知椭圆
的离心率为
,过椭圆上一点
作直线
交椭圆于
两点,且斜率分别为
,若点
关于原点对称,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad7451b947d1adea22bc04070efdd2b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a711b601b52e4116fc5e8e7d2949e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94af5265f3d42bedacccda0eef4ca20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e4e4c7a79d9d3cdb9ac5949d53e33e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80861c13bb2d470a2953bebc5e3ea044.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e4e4c7a79d9d3cdb9ac5949d53e33e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e394119a1922f1035eee73aa0b72b35c.png)
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|
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