# Difference between revisions of "Fourier series"

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

The Fourier series of a function f(t) is of the form:



where, n is an integer and





Fourier series can be generalized to Fourier transformations for non-perodic, piecewise continous, square integrable functions.