Frequency scaling for FFT and DFT

Performs frequency scaling for a sinusoidal test case using fft and dft.

Fourier Transform is used to convert a time domain signal to frequency domain signal and frequency scaling plays an important role in such operations.
1) This program performs and plots the FFT(matlab-inbuilt) and DFT(manual) operation.
2) It uses two time domain signals which are added and on which both Fourier Transform operations were used.
3) Both FFT and DFT use a written frequency scaling function.
4) It compares the elapsed or computational time for the two methods.
5) For FFT an inbuilt function was used and for DFT a written or manual function was used.