PROBLEM 4 [PIECEWISE FUNCTIONS]: In signal processing, three discrete-time elementary signals are being discussed. The first of these is the unit impulse function (n) and is defined as n = 0 n = 0' The second elementary signal is called the unit step function u(n) and is defined as u(n) = {1, n 20 n<0' lo, The third elementary signal is the ramp function r(n) and is defined as r(n) = {n Evaluate the expression: (1, 8(n) = {1 n≥ 0 n<0' n is an integer n is an integer n is an integer 8(3) - 5u (4)r (2) + 8(0)u(1)r(6) - 78(-3)

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PROBLEM 4 [PIECEWISE FUNCTIONS]: In signal processing, three discrete-time elementary
signals are being discussed. The first of these is the unit impulse function (n) and is defined as
n is an integer
8(n) = {1
(1,
n = 0
n = 0'
The second elementary signal is called the unit step function u(n) and is defined as
u(n) = {1,
Evaluate the expression:
n>0
n<0'
The third elementary signal is the ramp function r(n) and is defined as
r(n) = {1,
(n,
n is an integer
n≥0
n<0'
n is an integer
8(3)-5u(4)r (2) + 8(0)u(1)r(6)-78(-3)
Transcribed Image Text:PROBLEM 4 [PIECEWISE FUNCTIONS]: In signal processing, three discrete-time elementary signals are being discussed. The first of these is the unit impulse function (n) and is defined as n is an integer 8(n) = {1 (1, n = 0 n = 0' The second elementary signal is called the unit step function u(n) and is defined as u(n) = {1, Evaluate the expression: n>0 n<0' The third elementary signal is the ramp function r(n) and is defined as r(n) = {1, (n, n is an integer n≥0 n<0' n is an integer 8(3)-5u(4)r (2) + 8(0)u(1)r(6)-78(-3)
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