Precalculus (6th Edition) Blitzer

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

Chapter 9 - Cumulative Review Exercises - Page 1038: 22

Answer

See graph and explanations.

Work Step by Step

Step 1. Given $y=2cos(2x+\pi)$, we can identify its amplitude as $A=2$, period as $p=\frac{2\pi}{2}=\pi$, and phase shift as $\phi=-\frac{\pi}{2}$ Step 2. We can graph a complete period as shown in the figure.
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