“数理答疑团”为您解答,希望对你有所帮助.函数y=2sin(3x+3/4π)的值域为[-2,2],单调增区间为[2kπ/3-5π/12,2kπ/3-π/12],(k属于Z)单调减区间为[2kπ/3-π/12,2kπ/3+π/4],(k属于Z)对称轴方程为x=(3+4k)π/12,,(k...