解题方法
1 . 已知双曲线C与双曲线
有相同渐近线,但焦点不同,则C的方程可以是________ .(写出一个即可)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1fa37c4c826b5dcfebe86ab6177906.png)
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2 . 双曲线定位法是通过测定待定点到至少三个已知点的两个距离差所进行的一种无线电定位.通过船(待定点)接收到三个发射台的电磁波的时间差计算出距离差,两个距离差即可形成两条位置双曲线,两者相交便可确定船位.我们来看一种简单的“特殊”状况;如图所示,已知三个发射台分别为
,
,
且刚好三点共线,已知
海里,
海里,现以
的中点为原点,
所在直线为
轴建系.现根据船
接收到
点与
点发出的电磁波的时间差计算出距离差,得知船
在双曲线
的左支上,若船
上接到
台发射的电磁波比
台电磁波早
(已知电磁波在空气中的传播速度约为
,1海里
),则点
的坐标(单位:海里)为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/1c42c410-3f0c-4d90-93a3-ea6702439182.png?resizew=241)
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2483d1d7eddec15dcc6836b84849d0d9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cba95292c9f08f0ce7960c082036ca19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/55ce077630eadb1eac1525ccff8852bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3ae83406ce3fb2e85cae86e1b104610.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7039da7b0cdede65e9502881186e26b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/1c42c410-3f0c-4d90-93a3-ea6702439182.png?resizew=241)
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您最近一年使用:0次
2020-04-22更新
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584次组卷
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4卷引用:专题3.4《圆锥曲线的方程》单元测试卷(B卷提升篇)-2020-2021学年高二数学选择性必修第一册同步单元AB卷(新教材人教A版,浙江专用)
(已下线)专题3.4《圆锥曲线的方程》单元测试卷(B卷提升篇)-2020-2021学年高二数学选择性必修第一册同步单元AB卷(新教材人教A版,浙江专用)人教B版(2019) 选修第一册 过关检测 第二章 2.6.2 双曲线的几何性质云南师大附中2019-2020学年高三下学期高考适应性月考卷(七)理科数学试题云南师大附中2020届高三(下)月考数学(理科)试题(七)