y=asin(ωx+φ)+bcos(ωx+φ)=√(a^2+b^2)*sin(ωx+φ+φ0),其中φ0=tan^(-1) (b/a)
故y=4sin(2x+π/3)—cos(2x+π/3)=√17*sin(2x+π/3+tan^(-1) (-1/4)),其最小正周期为
2π/|ω=2π/2=π
y=asin(ωx+φ)+bcos(ωx+φ)=√(a^2+b^2)*sin(ωx+φ+φ0),其中φ0=tan^(-1) (b/a)
故y=4sin(2x+π/3)—cos(2x+π/3)=√17*sin(2x+π/3+tan^(-1) (-1/4)),其最小正周期为
2π/|ω=2π/2=π