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why laplace why not fourier??????

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wajahat

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Hi all , i hav studied that transients cannt be analysed using fourier.If transient is a nonperodic function even then it can be analysed usiing fourier.Only laplace can be used to analyse transients.
Any response in this regard would be helpful.
regards
wajahat
 

without going into mathematical details I believe this has got to do with the fact that damping effects cannot be captured in fourier transform. It deals only with radian frequency characterisation of a system not the neper frequency or the damping coefficient which are needed to fully characterise transients. Hence the need for laplace transform
 

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