Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 5 - Number Theory and the Real Number System - 5.7 Arithmetic and Geometric Sequences - Exercise Set 5.7 - Page 331: 145

Answer

The statement:“I’ve noticed that the big difference between arithmetic and geometric sequences is that arithmetic sequences are based on addition and geometric sequences are based on multiplication”Makes sense

Work Step by Step

In Arithmetic Progression the series is represented by: \[a,a+d,a+2d,a+3d,\ldots \] It can be written as \[{{a}_{n}}=a+\left( n-1 \right)d\] In this series,a denotes the first term and d denotes the common difference. It can be say that arithmetic sequence based on addition sequences. In Geometric Sequences, the series is represented by: \[a,ar,a{{r}^{2}},a{{r}^{3}},\ldots \] In this series, a denotes the first term and r denotes the common ratio It can be written as \[{{a}_{n}}=a{{r}^{\left( n-1 \right)}}\] It can be say that Geometric Sequences based on multiplication. Thus,an arithmetic sequence and geometric sequence are the sequences in which arithmetic sequences are based on addition and geometric sequences are based on multiplication. Hence, the provided statement makes sense.
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