Time-domain and frequency domain characteristics of sygnals and systems. Its in the book of author A.oppenheim (Sygnals and systems 2ed). We need to solve problems 6.1 to 6.20. Each problem should be represented in Scilab with plot. So some of them has a) and b) option and should be done is Scilab. I just need scilab code and some description of code if neccessary.