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Series: Arithmetic Progression Formula Manipulation

Worked Solution:

The formula for the sum, S of n terms of the arithmetic series starting at a whose terms have a common difference of d is:
S =
n (2 a + (n – 1) d )
---
2
For this arithmetic series, we have

© MEI Produced by Dr Ron Knott, revised 15 May 2007
tom . button [AT] mei . org . uk 		Test reference: SeriesAPFormula.html?ref=8733,qu=n%2Cref%3D3453