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## Homework Statement

Hello

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?

## Homework Equations

FT(f(t)) = ∫exp(i2πst)*f(t) dt

sin(t) = [exp(it) - exp(-it)] / 2i

## The Attempt at a Solution

edit: Please let me know if the images below aren't legible on your monitor. If so, I will increase the resolution.

http://imageshack.us/a/img716/9334/fourierpage1.png [Broken]

http://imageshack.us/a/img46/6585/fourierpage2.png [Broken]

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