1. The unit-step response of a linear control system is given in Figure P1. fd0) 1.25 1.0 0.01 (sec) Fig. P1 The unit-step response for Problem 1 A. Estimate the transfer function of a second-order...

Please write only the code for the given problem in Matlab and also attach the output.

Extracted text: 1. The unit-step response of a linear control system is given in Figure P1. fd0) 1.25 1.0 0.01 (sec) Fig. P1 The unit-step response for Problem 1 A. Estimate the transfer function of a second-order prototype system to model the system. B. Realize the transfer function obtained in A) using a physical system (e.g. series R-L-C circuit, mass-spring-damper system, etc.). C. Obtain the unit-step response for the system realized in B) o mathematically; o using MATLAB. D. Estimate the settling time for the response obtained in C)