Answer
See graph
Work Step by Step
See graph for $y=-2cos(2x-\pi)$ with an amplitude $2$ , a period $\pi$, and a phase shift $\frac{\pi}{2}$.
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 7 - Applications of Trigonometric Functions - Cumulative Review - Page 581: 5
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