Changes

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

'''Fourier series''' express a piecewise, continuous, 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 (mathematics)|series]] of a function ''f(t)'' is of the form:

:<math> f(t) = \frac{1}{2} a_0 + \sum_{n=1}^{\infty}[a_n \cos(\omega_n t) + b_n \sin(\omega_n t)] </math>

:<math> f(t) = \frac{1}{2} a_0 + \sum_{n=1}^{\infty}[a_n \cos(\omega_n t) + b_n \sin(\omega_n t)] </math>

where, ''n'' is an integer and

where, ''n'' is an integer and