The signal flow graph of a discrete time system is shown below: i. iii. iv. x(n) -1/25 3/8 -1/32 2/5 -1 Z- 3 2-1 -1 2 1/2 1/8 1/4 WI W + y(n) Find the transfer function of this system. Determine its impulse response. Is the system stable? Is it minimum phase? Draw the signal flow graph to implement the system in the direct form II. Find the state space representation (A, B, C, D} in the controllable canonical form.