很简单的问题：正弦函数sinx的单调增区间为[-π/2 + 2kπ,π/2 + 2kπ],单调减区间为[π/2 + 2kπ,3π/2 + 2kπ] （k∈Z）所以{x|-π/2 + 2kπ≤2X-π/6≤π/2 + 2kπ}为y=2sin(2X-π/6)的单调增区间,{x|π/2 + 2kπ...