A continuous time LTI system gives the output y(t) to the input xi(t), whose graphs are given below along with the x2(t). a. Let us sample these functions, with the sampling period of Ts=0.25 seconds. Draw the corresponding xi(n), x2(n) and yi(n). b. Find the response y2(n), if the input is x2(n). 12(t) 31(t) yi(t) -1 -2 -3- -1