解题方法
1 . 已知双曲线
的左、右顶点分别为
,离心率为
.过点
的直线l与C的右支交于M,N两点,设直线
的斜率分别为
.
(1)若
,求
;
(2)证明:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e9c11cc36320090d0aaf0c621a63b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31f8f7e40ba386c0a9675896b52752d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ed24bfcc37b79fe9ca61ed8fdf26ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e4cfa2db814e7e2e8abdf033706420.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dca1726d463bd741c904abd9b6589056.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e607c2f7ae494246768832acb0d54a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf434334b09cc0fdd4e86e84e6ceb00.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3342ecc389773431bc3f64410e41191.png)
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解题方法
2 . 对于椭圆:
,我们称双曲线:
为其伴随双曲线.已知椭圆C:
(
),它的离心率是其伴随双曲线M的离心率的
倍.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/10/d0682c0c-5307-47da-979f-4ca9bc5f520d.png?resizew=166)
(1)求椭圆C伴随双曲线M的方程;
(2)如图,点
分别为双曲线M的下顶点和上焦点,过F的直线l与M上支交于
两点,
的面积为
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdfa58915cc69feffe7dbe78d9d5d64b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b26461529321c5e669bdf3c489c5d74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faf94b793fc211b45616da1d0b3335b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eac95d4bdf7fa0ad635dbd96f72b20f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/10/d0682c0c-5307-47da-979f-4ca9bc5f520d.png?resizew=166)
(1)求椭圆C伴随双曲线M的方程;
(2)如图,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61b4187c24040140a998ea8032d63ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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3 . 已知双曲线
中,离心率为
,且经过点
.
(1)求双曲线方程;
(2)若直线
与双曲线左支有两个交点,求
的取值范围;
(3)过点
是否能作直线
与双曲线交于
、
两点,且使得
是
的中点,若存在,求出直线
的方程,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3040b6c904477030ecf8ba20b2b18759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8da36e3081bfe5d32c9ec70be4da3da.png)
(1)求双曲线方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acd55f837e9c4e6bba1163ef13edd09b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48120b21537527f5855e4314c007175d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2024-01-20更新
|
411次组卷
|
5卷引用:2.3.2 双曲线的性质(二十二大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
(已下线)2.3.2 双曲线的性质(二十二大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)上海市育才中学2023-2024学年高二上学期期末考试数学试卷上海市上海外国语大学附属大境中学2023-2024学年高二下学期期中考试数学试卷(已下线)专题04 圆锥曲线(六大题型+优选提升题)-【好题汇编】备战2023-2024学年高二数学下学期期末真题分类汇编(沪教版2020选择性必修,上海专用)(已下线)第4题 双曲线中满足一定条件的直线问题(压轴小题)
解题方法
4 . 已知双曲线C:
的离心率为
,右焦点为F,点P在C的一条渐近线上,O为坐标原点.
(1)求双曲线C的标准方程;
(2)若
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0b51ec8a87ca91d5859f34b8b2ce12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839c7616cd0d90265f4b2c9c021254fe.png)
(1)求双曲线C的标准方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/188283d605e3fec35fb39483bd4f31c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82010b61502fa67de56d9c15ffa2abbf.png)
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