Before I being, I'd like to say I already know about the fft() command. My goal is to compare the resulting FT matrix obtained by it with the one obtained via Matrix Multiplication. I have the following code:
N = [0:255];
X = (2*cos(((15.8*pi)/128)*N)) + (3*sin(((27.3*pi)/128)*N));
fX = fft(X);
How can I write the values for 'X' as a vector and the other vector 'x' so that I may multiply them to get the Fourier Transformation?