答：
f(x)=(sinx)^2+√3sinxcosx+2(cosx)^2
=1+√3sinxcosx+(cosx)^2
=(√3/2)sin2x+(1/2)cos2x+1/2+1
=sin(2x+π/6)+3/2
最小正周期T=2π/2=π
-π/6