已知函数f(x)=Asin(ωx+φ)(A>0,ω>0,-π/20,-π/2

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已知函数f(x)=Asin(ωx+φ)(A>0,ω>0,-π/20,-π/2已知函数f(x)=Asin(ωx+φ)(A>0,ω>0,-π/20,-π/2已知函数f(x)=Asin(ωx+φ)(A>0,

已知函数f(x)=Asin(ωx+φ)(A>0,ω>0,-π/20,-π/2
已知函数f(x)=Asin(ωx+φ)(A>0,ω>0,-π/20,-π/2

已知函数f(x)=Asin(ωx+φ)(A>0,ω>0,-π/20,-π/2
(1)A=1
T/4=π/12+π/6 得到T=π
w=2
所以f(x)=sin(2x+φ)
f(π/12)=0 故π/6+φ=2kπ+π/2(k是整数)
而-π/2