Precalculus (6th Edition) Blitzer

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

Chapter 10 - Section 10.3 - Geoetric Sequences and Series - Exercise Set - Page 1076: 108



Work Step by Step

The general formula for finding ${{a}_{n}}$ is given by; ${{a}_{n}}\text{ }={{a}_{1}}\text{ }{{\left( r \right)}^{n-1}}$ Here, $r$ is the common ratio. Compare the equation with ${{a}_{n}}\text{ }=\text{ }3{{\left( 0.5 \right)}^{n-1}}$. We get $r=\frac{1}{2}$ Hence, the given statement is true.
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