f(x)=sin(π/2 x)cos(π/2 x)的最小正周期为

f(x)=sin(π/2 x)cos(π/2 x)的最小正周期为

f(x)=1/2[2sin(π/2 x)cos(π/2 x)]=1/2sinπx ,所以最小正周期为T=（2π)/π=2