Question: PROBLEM 4 PIECEWISE FUNCTIONS]: In signal processing, three discrete-time elementary signals are being discussed. The first of these is the unit impulse function S (n)

PROBLEM 4 PIECEWISE FUNCTIONS]: In signal processing, three discrete-time elementary signals are being discussed. The first of these is the unit impulse function S (n) and is defined as n =0 s(n) -0 n is an integer n + 0' The second elementary signal is called the unit step function u(n) and is defined as u(n) - to n 20 n

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