s = n(a, +a,) and S. - 8 (1-r) Use and 1-r 1-r 23. the sum of the arithmetic series -5 + -1 +3 + ... (to 30 terms) a, =a, +(n-1)d 2.
s = n(a, +a,) and S. - 8 (1-r) Use and 1-r 1-r 23. the sum of the arithmetic series -5 + -1 +3 + ... (to 30 terms) a, =a, +(n-1)d 2.
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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Transcribed Image Text:n(a, +a,) and
- 8 (1-r*)
Use
and
%3D
2
1-r
1-r
23. the sum of the arithmetic series -5 + -1 +3 +... (to 30 terms)
a̟ = a, +(n-1)d
bas
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