A3 Find the half-range Fourier cosine series expansion for the function f(x) = x(Lx), for 0 < x < L. By considering x = L 듬, use your result to show that (-1) k2 12 k=1 Sketch the graph of the even periodic extension (period 2L).
A3 Find the half-range Fourier cosine series expansion for the function f(x) = x(Lx), for 0 < x < L. By considering x = L 듬, use your result to show that (-1) k2 12 k=1 Sketch the graph of the even periodic extension (period 2L).
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:A3 Find the half-range Fourier cosine series expansion for the function
f(x) = x(L − x), for 0 < x < L.
By considering x = 플,
use your result to show that
(−1)
k2
+2
12°
k=1
Sketch the graph of the even periodic extension (period 2L).
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