Question 1: Consider a discrete-time LTI system described by the difference equation yln] = y[n - 1] - 0.16 y[n - 2] + 2 x[n] - x[n - 1]. For each of the following MATLAB-based questions, show the relevant program code and results. a) Determine the system function H(2) and its poles and zeros. Is this system stable? Compute and draw the magnitude response and the phase response of the system. What type of filter is this system (high- pass, low-pass, band-pass, or band-stop)? [1 mark]