1 (30 points): Some elementary signals We are given the signals in Fig. 1. Determine the followings: In=v 17 t (sec) t (sec) 0 $(0) S4 (1) (sec) -+(sec) $(1) Figure 1: Five signals for Q.11 t (sec) (a) (20 Pts.) Determine mathematical expressions for each of the signals. Then, for each expression you obtained, test your signal for two t values and obtain a numerical value. Confirm that the graph has the same value for the chosen t value. (b) (10 Pts.) Plot g(t) if g(t) = c-85(cst - 0) - c4 and obtain the analytical expression for g(t). Again, verify your g(t) plot for two t values