双曲线中心在原点,一条渐近线方程为
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224849119694262/SYS201311012248491196942020_ST/0.png)
,准线方程为
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224849119694262/SYS201311012248491196942020_ST/1.png)
.
(1)求双曲线方程;
(2)若双曲线上存在关于y=kx+1对称的二点,求k范围.
考点分析:
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已知双曲线
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224849119694262/SYS201311012248491196942019_ST/0.png)
-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224849119694262/SYS201311012248491196942019_ST/1.png)
=1的离心率e>1+
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1、F
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△ABC的两个顶点坐标分别是B(0,-2)和C(0,2),顶点A满足
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(1)解不等式
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224849119694262/SYS201311012248491196942017_ST/0.png)
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