1.20. A continuous-time linear systemS with input x(t) and output y(t) yields the following input-output pairs: x(t) = ei2t ~ y(t) = ei3t, x(t) = e-i 2t ~ y(t) = e-131. (a) If x 1 (t) = cos(2t), determine the corresponding output y 1 (t) for systemS. (b) If x2(t) = cos(2(t - ~)), determine the corresponding output y2(t) for systemS.