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(3) Prove that πόληΣ one (= -10+1}], [cos² (π (n 1)! π(κ) = n 25η Σα where “π” within the sum stands for the constant π = 3.14159...

(3) Prove that πόληΣ one (= -10+1}], [cos² (π (n 1)! π(κ) = n 25η Σα where “π” within the sum stands for the constant π = 3.14159...

Advanced Engineering Mathematics
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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(3) Prove that Σcos (n (n-1}+1)], 2<n<x where “π” within the sum stands for the constant π = 3.14159 ... π(2) = Σ |cos2
Transcribed Image Text:(3) Prove that Σcos (n (n-1}+1)], 2<n<x where “π” within the sum stands for the constant π = 3.14159 ... π(2) = Σ |cos2
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