So, I've been asked to show that(adsbygoogle = window.adsbygoogle || []).push({});

f(x)=Ʃ_{n=0}^{∞}[a_{n}sin(nπx/a) + b_{n}cos(nπx/a)

is equivalent to f(x)=Ʃ_{n=-∞}^{∞}c_{neinx/a I'm kinda stuck. i want to turn this into the exponential form but I don't see how to condense this into a single term. Thanks!}

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# Homework Help: Proof of Plancherel for quantum

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