Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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I am struggling with the attached HW problem. Any help is appreciated. Thanks.

4. Suppose you know that f(x) = |x| = 5 -
specialization method to show that +++=
makes the sum E=1 2-12 cos [(2n – 1)a] equal ++ +·
cos (2n – 1)x] for all æ e (-7, T]. Use
m=D1
(2n-1)2
(Hint: Choose a special value for x that
.....%D
... -
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Transcribed Image Text:4. Suppose you know that f(x) = |x| = 5 - specialization method to show that +++= makes the sum E=1 2-12 cos [(2n – 1)a] equal ++ +· cos (2n – 1)x] for all æ e (-7, T]. Use m=D1 (2n-1)2 (Hint: Choose a special value for x that .....%D ... -
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