这举运陪正蠢样悄悄
解:f(x)=sinx-2√棚滚3sin²(x/2)=sinx-√3(1-cosx)=sinx+cosx-√3=√2sin(x+π/4)-√3(1)最小正周期T=2π/1=2π(2)x∈[0,2π/3],则π/4≤x+π/4≤11π/12x+π/4=11π/12时,即x=2π/3时族纯,sin(x+π/4)取得最小值,f(x)取得最小值f(x)min=sin(2π/3)-2√3sin²(π/3)=√3/2 -2√3·(√3/兆和咐2)²=-√3
2π