Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 10 - Section 10.2 - Arithmetic Sequences - Exercise Set - Page 1061: 72


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Work Step by Step

An arithmetic sequence is defined as an array of numbers which consists of a common difference between every two consecutive terms. For example: $1, 3,5, 7,....$ Here, the common difference is $d=3-1=2$ The sum of an arithmetic sequence is given by: $S_n=\dfrac{n}{2}[a_1+a_n]$ and the nth term for an arithmetic sequence is given by $a_n=a_1+(n-1) d$
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