What is Fourier Transform : Fourier Transform is a incredible method of finding the frequencies present in a signal. When we apply fourier transform we get a impulse at that particular sinusoidal frequency present in the incoming signal. Suppose that the signal is generated using three frequencies fm1 , fm2 and fm3. Now when we observe the fourier transform of this signal we can see three impulses at fm1 , fm2 and fm3. So in this program we are going to generate a random signal and note down the frequencies present in that signal. The after applying fourier transform we can check whether we have impulses at that frequencies or not. Algorithm : Step 1 : We are going to generate a random signal. Step 2 : Apply fourier transform to that signal. Step 3 : Verify. Program Code : clc clear all close all fs=input('Enter the sampling frequency'); t=0:1/fs:1; X=sin(2*pi*0*t); n=input('Enter the number of frequencies'); frequencies=[]; for i=1:n ...