-2sin(3x-pi/3)=2sin(3x-π/3+π)=2sin(3x+2π/3)=2sin(3x+2π/3+2kπ)=Asin(ωx+φ)
振幅:2
周期:T=2π/ω=2π/3
初相:2π/3+2kπ,k=任意整数
回答补充:初相是按正弦定义的
-2sin(3x-pi/3)=2sin(3x-π/3+π)=2sin(3x+2π/3)=2sin(3x+2π/3+2kπ)=Asin(ωx+φ)
振幅:2
周期:T=2π/ω=2π/3
初相:2π/3+2kπ,k=任意整数
回答补充:初相是按正弦定义的