函数y=sin(ωx+φ)(ω>0,|φ|0,|φ|T=2π/3==>w=2π/(2π/3)=3A=1∴f(x)=sin(3x+φ),f(π/4)=sin(3π/4+φ)=1==>3π/4+φ=π/2==>φ=π/4∴y=sin(3x+π/4)(2)解析：y=sinx==>y=sin(3x+π/4)将y=sinx图像左移π/4单位...
函数y=sin(ωx+φ)(ω>0,|φ|
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