f(x)=2sin(x/4)cos(x/4)-2√3sin²(x/4)+√3
=sin(x/2)+√3cos(x/2)
=2sin(x/2+π/3)
最小正周期T=2π/(1/2)=4π
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已知函数f(X)=2sin(π-x/4)cos(-x/4)-2√3sin²(2π+x/4)+√3 求函数的最小
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