Discrete Mathematics with Applications 4th Edition

Published by Cengage Learning
ISBN 10: 0-49539-132-8
ISBN 13: 978-0-49539-132-6

Chapter 7 - Functions - Exercise Set 7.1 - Page 394: 19

Answer

This is true because $b^1 = b$.

Work Step by Step

$b^1 = b $ for all numbers $b$. Since $log_a b$ is the number $c$ that satisfies $a^c = b$, $log_b b$ must be 1 for all numbers $b$, as $b^1 = b$.
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