真题
解题方法
1 . 已知双曲线
左右顶点分别为
,过点
的直线
交双曲线
于
两点.
(1)若离心率
时,求
的值.
(2)若
为等腰三角形时,且点
在第一象限,求点
的坐标.
(3)连接
并延长,交双曲线
于点
,若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07a3c16c6fb4a254b44936b2caf107a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8547f2b4e89b0ae1445bda02d46f0668.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
(1)若离心率
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0276541c12707b24d2f06ea3d976cf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31f02a5f7c7bed4e46a9ea36b510590a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d353f7781e779b5c72e56388934e345.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
真题
2 . 已知双曲线
(
为锐角)和圆
相切于点
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/173afee93a84013cff3124509de128cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64e3b74e7eb65567fd78a56ec015dc3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/562658a9c4d85477c1ce17191576638e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1394f286ff50ca9b86a127d13c55d65b.png)
您最近一年使用:0次
2022-11-07更新
|
261次组卷
|
2卷引用:1977年普通高等学校招生考试数学试题(理)(福建卷)