sinx的增区间为[-π/2+2kπ,π/2+2kπ]整体代换-π/2+2kπ≤2x-π/3≤π/2+2kπ可解出函数增区间为[-π/12+2kπ,5π/12+2kπ]减区间[π/2+2kπ,3π/2+2kπ]也用同样方法sinx最大点集合为{x|x=π/2+2kπ,k∈Z}整体代...怎么化简sin(2x-派/3)可以直接求增减区间，不用化简啊