y=1/2sin(π/3-2x/3)的单调区间

y=1/2sin(π/3-2x/3)的单调区间
y=1/2sin(π/3-2x/3)的单调区间

y=1/2sin(π/3-2x/3)的单调区间
y=1/2sin(π/3-2x/3)
=-1/2sin(2x/3-π/3)
-π/2+2kπ

单增区间：-pi/2+2k*pi<=pi/3-2x/3<=pi/2+2k*pi,同理可得到单减区间，做出函数图像观察