Hello,
I think you need help for your signal processing course. This should include subjects like convolution, continuous Fourier transform/ Fourier series, discrete Fourier transform/ Fourier series, Laplace transform, Z transform, sampling theorem, etc..
I have several years of experience teaching this course in the university and can certainly help you with all its details.
My price and timing are only place-holders here and will depend on the amount of work.
Thanks.