   Chapter 1, Problem 15RE ### Single Variable Calculus: Early Tr...

8th Edition
James Stewart
ISBN: 9781305270343

#### Solutions

Chapter
Section ### Single Variable Calculus: Early Tr...

8th Edition
James Stewart
ISBN: 9781305270343
Textbook Problem

# Use transformations to sketch the graph of the function.15. f(x) = –cos 2x

To determine

To sketch: The graph of the function y=cos2x by using transformation.

Explanation

Graph:

The standard graph of the function y=cosx is roughly sketched as shown below in Figure 1.

Then, to draw the graph of y=cos2x, shrink the graph y=cosx horizontally by a factor of 2. Thus, the graph of y=cos2x is shown below in Figure 2.

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Study Guide for Stewart's Single Variable Calculus: Early Transcendentals, 8th 