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- Thread starter squenshl
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- #1

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What have you tried? Have you noticed that is an even function?

- #3

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So does that mean |x| - [tex]\pi[/tex] = x - [tex]\pi[/tex], x [tex]\geq[/tex] 0 & -x - [tex]\pi[/tex], x < 0.

Then just find the Fourier series as a sum of these functions. If not I don't have a clue where to start.

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_{n}you multiply an even function with sin which an odd function to get an odd function and the integral of an odd function is always zero

Yes. And for the a

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Cheers. Got it, that was easy after all.

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