Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Chapter 11 - Sequences; Induction; the Binomial Theorem - Section 11.2 Arithmetic Sequences - 11.2 Assess Your Understanding - Page 834: 5

Answer

See below, $d=1$. $5,6,7,8$

Work Step by Step

1. Based on the given expression, we have $s_n-s_{n-1}=n+4-(n-1+4)=1$, thus this sequence is arithmetic and the common difference is $d=1$. 2. The first four terms are $5,6,7,8$
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