For the listed functions A) through D), do the following: • Plot the function f(x) and its magnitude |f(x)]. Compute the Fourier transform of f(x): g(k) = 1 /27 Le f(x) e-ikix dat (1) • Compute and plot the magnitude |g(k)| as a function of k. • For each function and its transform, think about (but do not compute!) Parseval's Theorem: [*_ \g(k) ³²dk = f*_ \ƒ(x)|²dx Based on your drawings of the function and its Fourier transform, which side of Parseval's theorem would be easier to compute? A) f(x) = e-|x|
For the listed functions A) through D), do the following: • Plot the function f(x) and its magnitude |f(x)]. Compute the Fourier transform of f(x): g(k) = 1 /27 Le f(x) e-ikix dat (1) • Compute and plot the magnitude |g(k)| as a function of k. • For each function and its transform, think about (but do not compute!) Parseval's Theorem: [*_ \g(k) ³²dk = f*_ \ƒ(x)|²dx Based on your drawings of the function and its Fourier transform, which side of Parseval's theorem would be easier to compute? A) f(x) = e-|x|
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
Related questions
Question

Transcribed Image Text:1 Practice with Fourier Transforms (**)
For the listed functions A) through D), do the following:
• Plot the function f(x) and its magnitude |ƒ(x)|.
• Compute the Fourier transform of f(x):
A) f(x) = e-|x|
1,
B) f(x) = { 1
g(k)
|x| ≤ 1 |
• Compute and plot the magnitude |g(k)| as a function of k.
• For each function and its transform, think about (but do not compute!) Parseval's Theorem:
lg(k)|²dk =
|f(x)|²da
0, otherwise
=
-∞
1
√2π Lx f(x)e-iker dar
(1)
Based on your drawings of the function and its Fourier transform, which side of Parseval's
theorem would be easier to compute?
(2)
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