Numerical Analysis
Numerical Analysis
3rd Edition
ISBN: 9780134696454
Author: Sauer, Tim
Publisher: Pearson,
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Chapter 10.3, Problem 5E
To determine

To show: the lemma 10.10 cos2πjkn as 12[ei2πjkn+ei2πjkn] and write in terms of ω=ei2π/n equation for lemma 10.1 can applied in the condition.

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