解题方法
1 . 已知椭圆
的左、右焦点分别为
,过点
作直线
交椭圆
于
两点,若
,则椭圆
的离心率为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1b9a69d7a2ff5e8df5bdf9c18f201c7.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/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d01a160d5b0931b8a8b0f15de3b693d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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解题方法
2 . 已知椭圆
的左、右焦点分别为
,过
的直线与
交于
两点,若
,且
,则椭圆
的离心率为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.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/c2427943a38dcd93c9ec9b735ffc9fe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06fbc879cb4f1255d4c9f443cbefe06a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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2023-04-08更新
|
1797次组卷
|
5卷引用:河北省石家庄市2023届高三教学质量检测(二)(一模)数学试题
解题方法
3 . 已知椭圆
的左、右焦点分别为
,
,A为左顶点,B为短轴的一个端点,若
,
,
构成等比数列,则圆C的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.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/7af6c0a9908bb6a1202d1deb4f4ec56c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cdfc6a59392d1ac3cd89ddc0308864c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/121fec86e29434bd4b9afe2656e38a41.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
4 . 在平面直角坐标系
中,已知椭圆
:
的左、右焦点分别为
,
,离心率为
,双曲线
:
的离心率为
,且椭圆
与双曲线
的焦点相同.过
的直线
与椭圆
交于
两点(点
在第一象限),与双曲线
的右支交于点
,且点
在线段
上.若
与
的周长之比为
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.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/d33558881906c228c262ff8024dcfc4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d4d0b4d60f28a0a82eaeb506ac58bc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a33a99190a8fd29c36d5a002e3197cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc19b3c838f96ad50f4450d0e76eb0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5eb2485f90dbfd0dfd6e7d179a856f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d55ff7eea051b0f87a65f05591851b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64478547eef44fbcea5a4a6038d3dc9e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-03-30更新
|
550次组卷
|
3卷引用:河北省保定市唐县第一中学2023届高三二模数学试题
河北省保定市唐县第一中学2023届高三二模数学试题陕西省榆林市第十中学2023届高三高考仿真模拟(一)理科数学试题(已下线)专题07 双曲线离心率归类(11题型)-【巅峰课堂】2023-2024学年高二数学上学期期中期末复习讲练测(人教A版2019选择性必修第一册)
解题方法
5 . 已知A,B,C为椭圆D上的三点,AB为长轴,
,
,
,则D的离心率是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e0c5cb53fd85b7a23f0580df6bb49a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-03-26更新
|
688次组卷
|
8卷引用:河北省“百万联考”2023届高三3月诊断性模拟数学试题
6 .
年
月,神舟十三号返回舱成功着陆,返回舱是宇航员返回地球的座舱,返回舱的轴截面可近似看作是由半圆和半椭圆
都包含
,
点
组成的“曲圆”半圆的圆心在坐标原点,半圆所在的圆过椭圆的焦点
,椭圆的短轴长等于半圆的直径,如图,在平面直角坐标系中,下半圆与
轴交于点
若过原点
的直线与上半椭圆交于点
,与下半圆交于点
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/29/cab298f8-921b-40e4-9baf-a1a2a80f22f7.png?resizew=353)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d01dd350dc95f42f1883e0cc7aae084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.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/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89cb4bbd260a0f7d43e535dcc921a001.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ca0af163f4d59eb4125eb28dccc5ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/29/cab298f8-921b-40e4-9baf-a1a2a80f22f7.png?resizew=353)
A.椭圆的离心率为![]() | B.![]() ![]() |
C.![]() ![]() | D.线段![]() ![]() |
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2023-03-24更新
|
553次组卷
|
3卷引用:河北省部分学校2023届高三考前模拟演练数学试题
名校
解题方法
7 . 椭圆是特别重要的一类圆锥曲线,是平面解析几何的核心,它集中地体现了解析几何的基本思想.而黄金椭圆是一条优美曲线,生活中许多椭圆形的物品,都是黄金椭圆,它完美绝伦,深受人们的喜爱.黄金椭圆具有以下性质:①以长轴与短轴的四个顶点构成的菱形内切圆经过两个焦点,②长轴长,短轴长,焦距依次组成等比数列.根据以上信息,黄金椭圆的离心率为___________ .
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2023-03-10更新
|
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4卷引用:河北省唐山市开滦第二中学2023届高三考前保温数学试题
名校
解题方法
8 . 设
、
分别是椭圆
的左、右焦点,
为椭圆上的一点,若
的最大值为
,则椭圆的离心率的取值范围是( )
![](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/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24220145958b530f26edccda777e4a22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d273dd2965115fb8c86ce07883ea67b.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2022-11-16更新
|
960次组卷
|
2卷引用:河北2023届高三学生全过程纵向评价数学试题(一)
名校
9 . 历史上第一位研究圆锥曲线的数学家是梅纳库莫斯(公元前375年-325年),大约100年后,阿波罗尼斯更详尽、系统地研究了圆锥曲线,并且他还进一步研究了这些圆锥曲线的光学性质.如图甲,从椭圆的一个焦点出发的光线或声波,经椭圆反射后,反射光线经过椭圆的另一个焦点,其中法线
表示与椭圆
的切线垂直且过相应切点的直线,如图乙,椭圆
的中心在坐标原点,
分别为其左、右焦点,直线
与椭圆
相切于点
(点
在第一象限),过点
且与切线
垂直的法线
与
轴交于点
,若直线
的斜率为
,
,则椭圆
的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dea1bd3d0dd84b8b6f6ff634c5600c.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/4d2a97987f71835f519b462f5b8f5957.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/dad2a36927223bd70f426ba06aea4b45.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dea1bd3d0dd84b8b6f6ff634c5600c.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/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9db9373e74ecf5d63ad98afe66aa4ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a10d23ff4ff1be567d781d7624a663c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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2022-12-14更新
|
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7卷引用:河北省2023届高三模拟数学试题
名校
10 . 已知
分别为椭圆
的左,右焦点,
是椭圆上两点,线段
经过点
,且
,则椭圆
的离心率为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c86951c43ac7fb7ff3350a424d2f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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2022-11-15更新
|
986次组卷
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4卷引用:河北省张家口市宣化第一中学2023届高三三模数学试题
河北省张家口市宣化第一中学2023届高三三模数学试题江苏省南通市如东县2022-2023学年高二上学期期中数学试题山东省济南市山东师范大学附属中学2022-2023学年高三下学期3月月考数学试题(已下线)期中真题必刷椭圆60题(4个考点专练)-【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)