## What Is Fourier Series?

What is fourior Series

What is fourior Series

Some real world application of fourier series:-

Complex form of fourier series

What is Matrices:-

Let \(F : x \Rightarrow y\)

Let \(f : X \rightarrow Y\) be a function. If B is subset of y then its inverse image \(f^-B\) is the subset of x define by