Question

Make an accurate sketch of each of the discrete-time signals (a) x(n) = u(n + 3) + 0.5 u(n - 1) (b) x(n) = ?(n + 3) + 0.5 ?(n - 1) (c) x(n) = 2^n ? ?(n - 4) (d) x(n) = 2^n ? u(-n - 2) (e) x(n) = (-1)^n u(-n - 4). (f) x(n) = 2 ?(n + 4) - ?(n - 2) + u(n - 3)

          Make an accurate sketch of each of the discrete-time signals
(a)
x(n) = u(n + 3) + 0.5 u(n - 1)
(b)
x(n) = ?(n + 3) + 0.5 ?(n - 1)
(c)
x(n) = 2^n ? ?(n - 4)
(d)
x(n) = 2^n ? u(-n - 2)
(e)
x(n) = (-1)^n u(-n - 4).
(f)
x(n) = 2 ?(n + 4) - ?(n - 2) + u(n - 3)

Make an accurate sketch of each of the discrete-time signals
(a)
x(n) = u(n + 3) + 0.5 u(n - 1)
(b)
x(n) = ?(n + 3) + 0.5 ?(n - 1)
(c)
x(n) = 2^n ? ?(n - 4)
(d)
x(n) = 2^n ? u(-n - 2)
(e)
x(n) = (-1)^n u(-n - 4).
(f)
x(n) = 2 ?(n + 4) - ?(n - 2) + u(n - 3)

Added by Julie H.

Calculus: Early Transcendentals

James Stewart 8th Edition

Instant Answer

Solved by Expert Sri K

12/08/2022

Step 1

r(n) = u(n + 3) + 0.5 u(n - 1): This is a combination of two unit step functions. The first unit step function starts at n = -3 and the second one starts at n = 1 but with half the amplitude. Show more…

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Make an accurate sketch of each of the discrete-time signals. x(n) = u(n + 3) + 0.5 u(n - 1) x(n) = δ(n + 3) + 0.5 δ(n - 1) x(n) = 2^n ⋅ δ(n - 4) x(n) = 2^n ⋅ u(-n - 2) x(n) = (-1)^n u(-n - 4) x(n) = 2 δ(n + 4) - δ(n - 2) + u(n - 3)