The Fourier series of a function is given by:
\[f(t) = a_0 + \sum_{n=1}^{\infty} [a_n \cos(n \omega t) + b_n \sin(n \omega t)]\]
where
\[a_0 = \frac{1}{T} \int_{-T/2}^{T/2} f(t) dt\]
\[a_n = \frac{2}{T} \int_{-T/2}^{T/2} f(t) \cos(n \omega t) dt\]
\[b_n =
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