已知函数y=Asin(wx+φ)(A>0,w>0,|φ|0,w>0,|φ|5π/3+φ=0==>φ=-2π/3
∴y=2sin(3x-2π/3)
当函数反相时,也适合,即
y=-2sin(3x-2π/3)=2sin(3x+π-2π/3)=2sin(3x+π/3)
已知函数y=Asin(wx+φ)(A>0,w>0,|φ|0,w>0,|φ|5π/3+φ=0==>φ=-2π/3
∴y=2sin(3x-2π/3)
当函数反相时,也适合,即
y=-2sin(3x-2π/3)=2sin(3x+π-2π/3)=2sin(3x+π/3)