Calculus 8th Edition

Published by Cengage
ISBN 10: 1285740629
ISBN 13: 978-1-28574-062-1

Chapter 2 - Derivatives - Review - Exercises: 34

Answer

$\dfrac {mx\times \cos \left( mx\right) -\sin mx}{x^{2}}$

Work Step by Step

$\dfrac {d}{dx}\left( \dfrac {\sin mx}{x}\right) =\dfrac {\left( \dfrac {d}{dx}\left( \sin mx\right) \right) \times x-\left( \dfrac {d}{dx}\left( x\right) \right) \times \sin mx}{x^{2}}=\dfrac {mx\times \cos \left( mx\right) -\sin mx}{x^{2}}$
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