楼主打错了吧？是3/π而不是π/3???? 令-π/2+kx<2x-3/π<π/2+kx
(1)解：求导f(x)=2sin(2x-π/3)+1 或画图f'(x)=4cos(2x-π/3)f(x)的单调增区间f'(x)大于等于0X=[-π/12+kπ,5π/12+kπ](2)X=-π/12+Kπ/2 (π/6+Kπ/2，0）
