Calculus 10th Edition

Published by Brooks Cole
ISBN 10: 1-28505-709-0
ISBN 13: 978-1-28505-709-5

Chapter 1 - Limits and Their Properties - 1.3 Exercises: 36


$\lim\limits_{x\to7}\sec{\frac{\pi x}{6}}=-\dfrac{2\sqrt{3}}{3}.$

Work Step by Step

Using both Theorems $1.6$ and $1.5: \lim\limits_{x\to c}(f(g(x)))=f(\lim\limits_{x\to c}g(x)):$ $\lim\limits_{x\to7}\sec{\frac{\pi x}{6}}=\sec{(\lim\limits_{x\to7}\frac{\pi x}{6})}=\sec{\frac{7\pi}{6}}=-\dfrac{2\sqrt{3}}{3}.$
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