解题方法
1 . 已知双曲线
经过点
,且实轴长是半焦距的
倍.
(1)求双曲线
的标准方程.
(2)若直线
与双曲线
交于
,
两点,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0379bf3779e66b040fb0dc67745ab609.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d94410aaf2abb2b81a7075ef208f6ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c98ee8ce2c56dccae6b63b5a9ca022b8.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/f3497af3942a788b64c6b91b62a8dbf1.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44e8bc37ed03f44470762748a8f942a.png)
您最近一年使用:0次
2 . 如图,从某个角度观看篮球,可以得到一个对称的平面图形如下图,篮球的外轮廓为圆
,将篮球表面的粘合线视为坐标轴和双曲线,若坐标轴和双曲线与圆
的交点将圆的周长八等分,且
,则该双曲线的方程为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/6a11b3b0-1d23-4f8d-a7cd-bd9f85b9b2bc.png?resizew=273)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2d5a8b191148d64254f2bb1cd229af.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/6a11b3b0-1d23-4f8d-a7cd-bd9f85b9b2bc.png?resizew=273)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-01-23更新
|
381次组卷
|
4卷引用:辽宁省丹东市2020-2021学年高二上学期期末数学试题