h[n] is a causal, real-valued sequence with h[0] nonzero and positive. The magnitude...

h[n] is a causal, real-valued sequence with h[0] nonzero and positive. The magnitude squared of the frequency response of h[n] is given by

(a) Determine a choice for h[n].

(b) Is your answer to part (b) unique? If so, explain why. If not, determine a second, distinct choice for h[n] satisfying the given conditions.