∵f(x)=2sin(π-x)cosx
=2sinxcosx
=sin2x
1、最小正周期T=2π/2=π.
2、∵-π/6≤x≤π/2
∴-π/3≤2x≤π,
∴-√3/2≤f(x)≤1,
∴最大值1,最小值-√3/2.