a) Find an explicit formula to calculate this sum s. (Assume that
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:S = 1.1+2.2+1·3+2.4+ .. +1• (n – 1) +2 ·n
Here, we multiple the summands successively with 1, 2, 1, 2, 1, 2, .
(a) Find an explicit formula to calculate this sum S. (Assume that n is a multiple of 2.)
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