CP13.3 The closed-loop transfer function of a sampled

data system is given by

Y(z) T(z) = R(z) 0.684 (z -0.4419) z -0.7524z + 0.0552 (a) Compute the unit step response of the system using the dstep function, and assume a sampling period. of 70.1 s. (b) Determine the continu- ous-time transfer function equivalent of T(z) using the d2c function, and assume a sampling period of T=0.1 s. (c) Compute the unit step response of the continuous (nonsampled) system using the step function, and compare the plot with part (a).