I'm learning Fourier transforms via the Stanford lecture series on Youtube. In the 6th lecture, the professor claims that the FT of a triangle function is the square of the sinc function. I'm trying to derive this, but I can't get my math to work out. Could someone please help me figure out where I went wrong?
FT(f(t)) = ∫exp(i2πst)*f(t) dt
sin(t) = [exp(it) - exp(-it)] / 2i
The Attempt at a Solution
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