I don't understand what electrical engineers mean by the frequency of a signal... Frequency is the inverse of the period, but they speak of the frequency of non-periodic signals.(adsbygoogle = window.adsbygoogle || []).push({});

I know that I can derive the function using the Fourier transform, I just don't understand what frequency means in this context... For example, why is the Fourier transform of f(x) = 1 is [tex]\hat{f}(\xi )=\delta (\xi)[/tex] (dirac delta)? The only frequency that gives a non-zero value for f is 0, why is that?

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# What does the frequency representation of a function show?

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