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|](/uploads/image/z/6068658-66-8.jpg?t=%E8%8B%A5%E5%87%BD%E6%95%B0y%3DAsin%28%CF%89x%2B%CF%86%29%28A%3E0%2C%CF%89%3E0%2C%7C%CF%86%7C)
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
再问: A是怎么算出来的?
再答: OM*ON=0 即:x1x2+y1y2=0 也即:(π/12)(7π/12)-A²=0
∴T=π
∴w=2π/w=2
M(π/12,A) N(7π/12,-A)
∴A=√7π/12
∴Aw=√7π/6
再问: A是怎么算出来的?
再答: OM*ON=0 即:x1x2+y1y2=0 也即:(π/12)(7π/12)-A²=0
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