Changes
minor correction
:<math>b_n = \frac{2}{T} \int_{t_1}^{t_2} f(t) \sin(\omega_n t)\, dt </math>
Fourier series can be generalized to [[Fourier transformation]]s for non-perodic, piecewise continuousother classes of functions, for instance [[square integrable function]]s.
[[category: mathematics]]
