Calculus (3rd Edition)

Published by W. H. Freeman
ISBN 10: 1464125260
ISBN 13: 978-1-46412-526-3

Chapter 7 - Exponential Functions - 7.9 Hyperbolic Functions - Exercises - Page 384: 4


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Work Step by Step

Since $\sinh x$ is an odd function and $\cosh x$ is even, then using the fact that $$\tanh x=\frac{\sinh x}{\cosh x}$$ we see that $\tanh x$ is an odd function.
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