若函数y=Asin(ωx+φ)(A>0,ω>0,|φ|

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若函数y=Asin(ωx+φ)(A>0,ω>0,|φ|若函数y=Asin(ωx+φ)(A>0,ω>0,|φ|若函数y=Asin(ωx+φ)(A>0,ω>0,|φ|T/4=π/3-π/12=π/4∴T=

若函数y=Asin(ωx+φ)(A>0,ω>0,|φ|
若函数y=Asin(ωx+φ)(A>0,ω>0,|φ|

若函数y=Asin(ωx+φ)(A>0,ω>0,|φ|
T/4=π/3-π/12=π/4
∴T=π
∴w=2π/w=2
M(π/12,A) N(7π/12,-A)
∴A=√7π/12
∴Aw=√7π/6

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