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Yes. For example: A square wave has a Fourier series.
what are the limitations of forier series over fourier transform
Fourier series is series which help us to solve certain physical equations effectively
Fourier series is the sum of sinusoids representing the given function which has to be analysed whereas discrete fourier transform is a function which we get when summation is done.
Fourier analysis shows that the saw wave is constructed through manipulation of a sine wave, I can't remember the maths behind it but it's definitely a sine wave.