求y=3sin(-2x+π/3)的单调区间和对称轴
问题描述:
求y=3sin(-2x+π/3)的单调区间和对称轴
答
y=-3sin(2x-π/3)-π/2+2kπ<2x-π/3<π/2+2kπ -π/12+kπ<x<5π/12+kπ单调减区间(-π/12+kπ,5π/12+kπ)k∈Zπ/2+2kπ<2x-π/3<3π/2+2kπ5π/12+kπ<x<11π/12+kπ单调增区间(5π/12+kπ,11π/12+kπ...