Q.39 A causal control system having poles at (–2, 1), (2, –1) and zeros at (2, 1) and (–2, –1).Identify the nature of transfer function.
(A) Unstable, complex, all pass
(B) Stable, real, all pass
(C) Unstable, complex, HP
(D) Stable, real, HPF
Answer:(A)
Explanation:
