Fourier transform for a sequence of values

There is a signal x(n) = [5 3 -4 2 8]. How to find the Fourier Transform of the signal x(n).

Answer 1

[the cyclist]

fft(x)

[Iftekharuddin Syed]

How to perform manually, because I know the expression as

How to deal with imaginary part?

[Iftekharuddin Syed]

I mean how to find X(k) for k=1.

[the cyclist]

That is a very straightforward formula to code into MATLAB. For example, the exponential bit could be written

exp(-i .* 2*pi * k .* n ./ N)

It is usually pretty straightforward to translate simple math formulas into MATLAB.

But this is not the best place to learn all the MATLAB you need to know in order to write this code. I recommend watching the MATLAB Onramp video.