Changes

Fourier series express a piecewise continous, periodic function as a linear combination of [[orthogonal]] [[Sine]] and [[Cosine]] functions.

'''Fourier''' series express a piecewise continous, periodic function as a linear combination of [[orthogonal]] [[sine]] and [[cosine]] functions.

The Fourier series of a function ''f(t)'' is of the form:

The Fourier series of a function ''f(t)'' is of the form: