函数Y=sin^2(x/2)-cos^2(x/2)的最小正周期怎么计算?

问题描述:

函数Y=sin^2(x/2)-cos^2(x/2)的最小正周期怎么计算?

根据cosx=-(sin^2(x/2)-cos^2(x/2)) T=2PAI