29. For each of the unit step responses shown in Figure P4.9, find the transfer function of the system. [Sections: 4.3, 4.6]. Wiley PLUS WPCS Control Solutions Response 2 0 25 20 15 Ons 10 5 1.4 0.05 0.1 0.15 0.2 10 Time (seconds) (a) 0.25 3 5 2 Time (seconds) (b) 1.2 1.0 Response 0.8 0.6 k 0,4 0.2 0. 0 5 10 15 20 25 Time (seconds) (c) FIGURE P4.9