Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 4 - Section 4.6 - Graphs of Other Trigonometric Functions - Exercise Set - Page 611: 86

Answer

Please see below.
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Work Step by Step

The red graph is the graph of $y=-3.5 \cos (\pi x-\frac{\pi }{6})$, and the blue graph is the graph of $y=-3.5 \sec (\pi x-\frac{\pi }{6})$. The period of both functions are the same and equal $\frac{2\pi }{\pi }=2$.
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