已知A(-5,0),B(5,0),直线AM、BM相交于点M,且它们的斜率之积是
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231405922384548/SYS201311012314059223845017_ST/0.png)
,试求点M的轨迹方程.
考点分析:
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已知p:x
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已知:△ABC的周长为
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231405922384548/SYS201311012314059223845015_ST/0.png)
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231405922384548/SYS201311012314059223845015_ST/2.png)
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已知:对任意正实数x,
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恒成立,则a的取值范围是:
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已知直线l过椭圆
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231405922384548/SYS201311012314059223845013_ST/0.png)
的右焦点F
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设集合A={x|x
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