如题所述
T=2π/w=2π/(1/2) = 4π
T=2π/w=2π/2 = π
T=2π/w=2π/π = 2
T=4/3[5π/12 -( -π/3 )] = π
T=2(11π/12 - 7π/12) = 5π/6