Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 7 - Trigonometric Identities and Equations - 7.1 Fundamental Identities - 7.1 Exercises: 26

Answer

Equation is odd.

Work Step by Step

$f\left( x\right) =x\cos x\Rightarrow f\left( -x\right) =\left( -x\right) \times \cos \left( -x\right) =\left( -x\right) \times \cos x=-x\cos x\Rightarrow f\left( -x\right) =-f\left( x\right) $ So the equation is odd.
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