December 2020
Intermediate to advanced
1064 pages
49h 13m
English
Content preview from Advanced Engineering Mathematics, 7th Edition
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12.3 Fourier Cosine and Sine Series
INTRODUCTION
The effort expended in the evaluation of coefficients a0, an , and bn in expanding a function f in a Fourier series is reduced significantly when f is either an even or an odd function. A function f is said to be
even if f(–x) = f(x) and odd if f(–x) = –f(x).
On a symmetric interval such as (–p, p), the graph of an even function possesses symmetry with respect to the y-axis, whereas the graph of an odd function possesses symmetry with respect to the origin.
Even and Odd Functions
It is likely the origin of the words even and odd derives from the fact that the graphs of polynomial functions that ...
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