2)Given )

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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2)Given
х
f (x) =
1
Find
a) the Fourier cosine series expansion of f (x)
b) the Fourier sine series expansion of f(x)
2
(COSTX
cos5nx
1 (cos2nx
cos6nx
cos10πχ
(Answer a: f(x)
cos3nx
+
12
+ ...
...
8
32
52
12
32
52
sinATX+.)
sinnx
sin2nx
(1
2 sin3nx
(Answer b: f(x) = (1+)
2n
3n
37
Transcribed Image Text:2)Given х f (x) = 1 Find a) the Fourier cosine series expansion of f (x) b) the Fourier sine series expansion of f(x) 2 (COSTX cos5nx 1 (cos2nx cos6nx cos10πχ (Answer a: f(x) cos3nx + 12 + ... ... 8 32 52 12 32 52 sinATX+.) sinnx sin2nx (1 2 sin3nx (Answer b: f(x) = (1+) 2n 3n 37
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