f(x)=sin(x/3)cos(x/3)+(根号3)cos^2(x/3)怎么化成Asin(wx+Ф)的形式,
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![f(x)=sin(x/3)cos(x/3)+(根号3)cos^2(x/3)怎么化成Asin(wx+Ф)的形式,](/uploads/image/z/6853177-1-7.jpg?t=f%28x%29%3Dsin%28x%2F3%29cos%28x%2F3%29%2B%28%E6%A0%B9%E5%8F%B73%29cos%5E2%28x%2F3%29%E6%80%8E%E4%B9%88%E5%8C%96%E6%88%90Asin%28wx%2B%D0%A4%29%E7%9A%84%E5%BD%A2%E5%BC%8F%2C)
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f(x)=sin(x/3)cos(x/3)+(根号3)cos^2(x/3)怎么化成Asin(wx+Ф)的形式,
f(x)=sin(x/3)cos(x/3)+(根号3)cos^2(x/3)怎么化成Asin(wx+Ф)的形式,
f(x)=sin(x/3)cos(x/3)+(根号3)cos^2(x/3)怎么化成Asin(wx+Ф)的形式,
f(x)=sin(x/3)cos(x/3)+(根号3)cos^2(x/3)
=1/2sin(2x/3)+(根号)3*[cos(2x)/3+1]/2
=cos(π/3)sin(2x/3)+sin(π/3)cos(2x/3)+根号3/2
=sin[(2x+π)/3]+根号3/2