Calculus (3rd Edition)

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

Chapter 3 - Differentiation - 3.3 Product and Quotient Rules - Exercises - Page 123: 56


$(f^{3})'=(f^{2}\cdot f)'=(f^{2})'\times f+f'\times f^{2}=2ff'\times f+f^{2}f'=2f^{2}f'+f^{2}f'=3f^{2}f'$

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