已知函数f(x)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123713132691389/SYS201310251237131326913017_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/20131025123713132691389/SYS201310251237131326913017_ST/1.png)
,f(C)=0,若向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123713132691389/SYS201310251237131326913017_ST/2.png)
与向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123713132691389/SYS201310251237131326913017_ST/3.png)
共线,求a,b的值.
考点分析:
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已知函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123713132691389/SYS201310251237131326913016_ST/0.png)
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(1)设
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123713132691389/SYS201310251237131326913016_ST/1.png)
,且
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,且△ABC的面积为
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123713132691389/SYS201310251237131326913016_ST/4.png)
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在△ABC中,若∠A=120°,c=6,△ABC的面积为
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123713132691389/SYS201310251237131326913014_ST/0.png)
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