Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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iv)) please
Transcribed Image Text:Question B2
A continuous-time signal, x(t), has a Fourier transform denoted by X (w), and is
expressed as:
a)
(i)
(ii)
(iii)
(iv)
X (w) =
0,
w²
0,
w<-wm
if-wm ≤ w<wm
w > wm
Write down the definition of the Fourier transform, and calculate the
value of the integral:
-L
I =
x(t) dt
Using the definition of the inverse Fourier transform, calculate the
value of x(0); i.e. x(t) evaluated at t = 0.
In this part of the question, you do not need to find the full expression
for x(t).
Determine whether energy or power provides the most suitable
measure of the size of the time-domain signal, x(t), justifying your
answer.
Using the appropriate form of Parseval's theorem, calculate the
value of the measure chosen to find the size of the signal, (t).
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