# Fourier Series

This applet lets you choose from 5 periodic functions and compare to the Fourier series.
The Fourier series approximates a periodic function by a "trig polynomial"

## New Resources

## Discover Resources

Download our apps here:

This applet lets you choose from 5 periodic functions and compare to the Fourier series.
The Fourier series approximates a periodic function by a "trig polynomial"

Download our apps here: