Frequency-domain sampling. Consider the following discrete-time signal whe...

Frequency-domain sampling. Consider the following discrete-time signal

where a = 0.95 and L = 10.

(a) Compute and plot the signal x(n).

(b) Show that

(c) Compute

for N = 30.

(d) Determine and plot the signal

What is the relation between the signals Explain.

(e) Compute and plot the signal Compare the signals .

(f) Repeat parts (c) to (e) for N = 15.