已知函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231646788066081/SYS201311012316467880660016_ST/0.png)
(1)求函数f(x)的最小值和最小正周期;
(2)设△ABC的内角A、B、C、的对边分别为a、b、c,且c=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231646788066081/SYS201311012316467880660016_ST/1.png)
,f(C)=0,若向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231646788066081/SYS201311012316467880660016_ST/2.png)
与向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231646788066081/SYS201311012316467880660016_ST/3.png)
共线,求a,b.
考点分析:
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设
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231646788066081/SYS201311012316467880660012_ST/2.png)
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具有性质:f(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231646788066081/SYS201311012316467880660011_ST/0.png)
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231646788066081/SYS201311012316467880660011_ST/2.png)
③y=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231646788066081/SYS201311012316467880660011_ST/3.png)
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