(5) (MATLAB Exercise) problem we will simulate some signal operations via simulation i.e. scaling, shifting and their combination First generate a segment of an exponentially decaying function y() exp[u)-u(-4)] 4 By taking the time increment of 0.001 sec and considering the time interval [- Plot y(t) 5] ii. Apply time scaling to generate new signal i y(21) and plotit ii. Apply time shifting to generate new signal y2 +2) and plot it iv. Apply time scaling, time inversion, and time shifting to generate a new signal y,(0)-y(2-21) and plot it. Hints: .Use subplot command to plot y(),y,().y2).() in a single figure. expO,absO,ustep are some useful functions in MATLAB