Calculus (3rd Edition)

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

Chapter 3 - Differentiation - 3.6 Trigonometric Functions - Exercises: 8

Answer

$9sec(x)tan(x)-12csc^{2}(x)$

Work Step by Step

The derivative of a sum is the sum of each of the derivatives. Therefore, the derivative simplifies to $9(sec(x))'+12(cot(x))'$, or $9sec(x)tan(x)-12csc^{2}(x)$.
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