Matlab 对函数中的系数作傅里叶变换 f(t)=a*x1(t)+b*x2(t)+c*x3(t)+d 其中f(t),x1(t),x2(t),x3(t)为已知的时间序列,现在a,b,c,d是关于时间的周期函数.(周期已知函数未知)请教各位如何求a的傅里叶变换的
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![Matlab 对函数中的系数作傅里叶变换 f(t)=a*x1(t)+b*x2(t)+c*x3(t)+d 其中f(t),x1(t),x2(t),x3(t)为已知的时间序列,现在a,b,c,d是关于时间的周期函数.(周期已知函数未知)请教各位如何求a的傅里叶变换的](/uploads/image/z/692224-16-4.jpg?t=Matlab+%E5%AF%B9%E5%87%BD%E6%95%B0%E4%B8%AD%E7%9A%84%E7%B3%BB%E6%95%B0%E4%BD%9C%E5%82%85%E9%87%8C%E5%8F%B6%E5%8F%98%E6%8D%A2+f%28t%29%3Da%2Ax1%28t%29%2Bb%2Ax2%28t%29%2Bc%2Ax3%28t%29%2Bd+%E5%85%B6%E4%B8%ADf%28t%29%2Cx1%28t%29%2Cx2%28t%29%2Cx3%28t%29%E4%B8%BA%E5%B7%B2%E7%9F%A5%E7%9A%84%E6%97%B6%E9%97%B4%E5%BA%8F%E5%88%97%2C%E7%8E%B0%E5%9C%A8a%2Cb%2Cc%2Cd%E6%98%AF%E5%85%B3%E4%BA%8E%E6%97%B6%E9%97%B4%E7%9A%84%E5%91%A8%E6%9C%9F%E5%87%BD%E6%95%B0.%EF%BC%88%E5%91%A8%E6%9C%9F%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0%E6%9C%AA%E7%9F%A5%EF%BC%89%E8%AF%B7%E6%95%99%E5%90%84%E4%BD%8D%E5%A6%82%E4%BD%95%E6%B1%82a%E7%9A%84%E5%82%85%E9%87%8C%E5%8F%B6%E5%8F%98%E6%8D%A2%E7%9A%84)
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