已知点
、
,为双曲线
的左、右焦点,过
作垂直于
轴的直线,在
轴的上方交双曲线
于点
,且
.
(1)求双曲线
的方程;
(2)若直线
过点(0,1)且与双曲线
交于
、
两点,若
、
中点的横坐标为1,求直线
的方程;
(3)过双曲线
上任意一点
作该双曲线两条渐近线的垂直,垂足分别为
、
,求证:
为定值.
![](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/176569a223942b06f78d81633e2467b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcab89af1a6510b60cd8377b754d450d.png)
(1)求双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)过双曲线
![](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/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae317439423ba7efbd2c3b1fd1a508bc.png)
20-21高二下·上海徐汇·期中 查看更多[6]
上海市位育中学2020-2021学年高二下学期期中数学试题(已下线)3.2 双曲线-2021-2022学年高二数学同步精品课堂讲+例+测(苏教版2019选择性必修第一册)(已下线)试卷09(第1章-3.2双曲线)-2021-2022学年高二数学易错题、精典题滚动训练(苏教版2019选择性必修第一册)(已下线)3.2双曲线(专题强化卷)-2021-2022学年高二数学课堂精选(人教A版2019选择性必修第一册)(已下线)第4课时 课后 双曲线的标准方程(已下线)3.2 双曲线(练习)-高二数学同步精品课堂(苏教版2019选择性必修第一册)
更新时间:2021-07-26 08:21:26
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【推荐1】已知双曲线C关于两条坐标轴都对称,且过点
,直线
与
(
,
为双曲线C的两个顶点)的斜率之积
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a8f7644c91d024fc14e08e7e3231725.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b340ca0c559753a521f20df462ea69a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5c93e8a9d9998fe304902a29d019277.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6d48a7b73030fb2873bd97b242fe805.png)
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【推荐2】已知椭圆
上任一点到两个焦点
的距离之和为
,短轴长为4.动点
在双曲线
(顶点除外)上运动,直线
和
与椭圆
的交点分别为
和
.
(1)求椭圆
的方程;
(2)证明:
为定值,并求出此定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1653c086d557b1845d82c2d4d8231f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b67528f875a6d4bac8bbf784f7b66a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/183b6a0cef4256c9696a5bca31053da5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c29a7e8eea08197bf53164a560bee58.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df6d243e1e67c479b5c8963eda9d70ae.png)
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【推荐1】已知双曲线
实轴左右两个顶点分别为
,双曲线
的焦距为
,渐近线方程为
.
(1)求双曲线
的标准方程;
(2)过点
的直线
与双曲线
交于
两点.设
的斜率分别为
,且
,求
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96c4088276acdbede4781b2ebc466366.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b91d650c2fc1a741fabdb333b09aeb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060e229870f126b31e37965bc0c58667.png)
(1)求双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3c032441543354c154ee67d744abb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/748524a1d21f0c6c051cf6f3222d12ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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【推荐2】已知椭圆
与双曲线
的离心率的平方和为
.
(1)求
的值;
(2)过点
的直线
与椭圆
和双曲线
分别交于点
,
,
,
,在
轴上是否存在一点
,直线
,
,
,
的斜率分别为
,
,
,
,使得
为定值?若存在,请求出点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46fe86542c761586582f54e3e493a6b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9855c5e03c4a175e8d17762d8f0c8b53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b00544cfc2fe697a37b5358feb3d159c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46b9768c2c8d0dbdc451c379fa857c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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解题方法
【推荐1】双曲线
的离心率为2,经过C的焦点垂直于x轴的直线被C所截得的弦长为12.
(1)求C的方程;
(2)设A,B是C上两点,线段AB的中点为
,求直线AB的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2cfa22139b3e9c9a73500e1ba19f52.png)
(1)求C的方程;
(2)设A,B是C上两点,线段AB的中点为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0e15e9463940aba61072e91e49b94f2.png)
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【推荐2】在平面直角坐标系
中,已知双曲线
的焦点为
、
,实轴长为
.
(1)求双曲线
的标准方程;
(2)过点
的直线
与曲线
交于
,
两点,且恰好为线段
的中点,求线段
长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
(1)求双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a453aca6de44f9e23703ec8f421fa32.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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