25: Using a suitable Fourier- Series expansion for 0 S x ST: A) Show that: x(n -x) (cos 2x cos 4x . 22 cos 6x %3D 6. 12 32 From (A), prove that: S0 (-1)n+1 un=1 !!
25: Using a suitable Fourier- Series expansion for 0 S x ST: A) Show that: x(n -x) (cos 2x cos 4x . 22 cos 6x %3D 6. 12 32 From (A), prove that: S0 (-1)n+1 un=1 !!
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:Q5: Using a suitable Fourier - Series expansion for 0 S x ST:
(cos 2x
cos 4x
A) Show that: x(n- x)
6.
cos 6x
...
12
22
32
500 (-1)n+1
n?
From (A), prove that:
%3D
12
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