周期T=π/欧米茄欧米茄=1/2T=2π？！f(-x)=3tan(-1/2x-π/3) =…………………………不想化简真麻烦………………………………自己看着办设任意x1,x2在定义域上，且x1f(x1)-f(x2)=3tan(1/2x1-π/3)-3tan(1/2x2-π/3) =…………继续化简无能…………………………………………然后继续你看着办恩，就酱紫。
