19-20高一·浙江杭州·期末
解题方法
1 . 如图,在平面直角坐标系
中,椭圆
的左、右焦点分别为
,
,P为椭圆C上一点,且
垂直于x轴,连结
并延长交椭圆于另一点Q,设
.
![](https://img.xkw.com/dksih/QBM/2020/11/30/2604112627032064/2604210020950016/STEM/dc6bbd3b85ed4d8f8ea9f94acdc40715.png?resizew=227)
(1)若点P的坐标为
,求椭圆C的方程;
(2)若
,求椭圆C的离心率e的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](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/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39535b1ecbf2258befa24d291df3bf9b.png)
![](https://img.xkw.com/dksih/QBM/2020/11/30/2604112627032064/2604210020950016/STEM/dc6bbd3b85ed4d8f8ea9f94acdc40715.png?resizew=227)
(1)若点P的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2de52259b426acb42761fec59a7748.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e58898ef2986d2ee7ca468095e2a217.png)
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19-20高一·浙江杭州·期末
名校
解题方法
2 . 已知
为坐标原点,
分别是椭圆
的左右焦点,
为椭圆的右顶点,
为
上一点,且
轴,过点
的直线
与线段
交于点
,与
轴交于点
,若直线
与
轴交于点
,且
,则
的离心率为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0803835d6f594a60bd16c823e3ad2cd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/8d8ad9e94d07405a6be585f81a0d623b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f912ab7992d02afca9ac5b26d8a4173.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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2020-11-30更新
|
589次组卷
|
4卷引用:【新东方】杭州新东方高中数学试卷396
(已下线)【新东方】杭州新东方高中数学试卷396浙江省9+1高中联盟2020-2021学年高二上学期期中数学试题(已下线)【新东方】在线数学161高二上江苏省南通市西亭高级中学2020-2021学年高二上学期第二次阶段检测数学试题
名校
解题方法
3 . 若椭圆的一个顶点与两个焦点构成等边三角形,则椭圆的离心率为( )
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
4 . 在平面直角坐标系
中,椭圆
的离心率为
,过点
,且
是椭圆
的内接三角形.
(1)若点
为椭圆
的上顶点,且原点
为
的垂心,求线段
的长;
(2)若点
为椭圆
上的一动点,且原点
为
的重心,求原点
到直线
距离的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a207b991e4f904cea7aaa8f3b046f0a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc96cbcfa8d5e19732facffb936bec5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)若点
![](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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc96cbcfa8d5e19732facffb936bec5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(2)若点
![](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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc96cbcfa8d5e19732facffb936bec5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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名校
解题方法
5 . 椭圆
与直线
相交于
两点,
是线段
的中点,若
,
的斜率为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bf5c1d124e8e023fe8e8c5ef3412813.png)
_______ ,离心率![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ce2b47812fce4b17fd813d0e4cce21.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2085af2326d0e13a12d3db8dbb79f51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0985b973395bcd371cd1e26d3fcd1c36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/699fc9b7e879af4866aaa07848dfb423.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bf5c1d124e8e023fe8e8c5ef3412813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ce2b47812fce4b17fd813d0e4cce21.png)
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解题方法
6 . 过椭圆
的右焦点作
轴的垂线,交椭圆
于
两点,直线
过
的左焦点和上顶点,若以
为直径的圆与
存在公共点,则椭圆
的离心率的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2020-11-28更新
|
1093次组卷
|
7卷引用:【新东方】杭州新东方数学试卷409
(已下线)【新东方】杭州新东方数学试卷409浙江省宁波市效实中学2020-2021学年高二上学期期中数学试题(已下线)专题2.2 椭圆-2020-2021学年高二数学课时同步练(苏教版选修2-1)(已下线)专题2.2 椭圆-2020-2021学年高二数学课时同步练(苏教版选修1-1)人教B版(2019) 选修第一册 过关检测 第二章 专题3 椭圆中的综合问题(已下线)第01讲 椭圆(讲)四川省眉山市仁寿县2023-2024学年高二上学期1月期末模拟联考数学试题
7 . 椭圆
的离心率为______ ,长轴长______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfb7101fa9146fdec51d44b8bf481dc7.png)
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19-20高一·浙江杭州·期末
解题方法
8 . 已知
,
是椭圆
的左、右焦点,过右焦点
的直线l与椭圆交于A,B两点,且满足
,
则该椭圆的离心率是_______ .
![](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/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16da7abce0dd4d6a6673b5d7955ba83a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6857a2708c8052f8b63635f63afafddc.png)
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19-20高一·浙江杭州·期末
解题方法
9 . 设椭圆的左焦点为F,过椭圆上点A作椭圆的切线与y轴交于点Q,若
(O为坐标原点),则椭圆的离心率为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a2ecabf9d5aa5d21b22573e6893ab5b.png)
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