Calculus (3rd Edition)

Published by W. H. Freeman
ISBN 10: 1464125260
ISBN 13: 978-1-46412-526-3

Chapter 12 - Parametric Equations, Polar Coordinates, and Conic Sections - 12.3 Polar Coordinates - Preliminary Questions - Page 617: 4



Work Step by Step

If $f(\theta )=f(-\theta)$ then the curve $r=f(\theta)$ is symmetric with respect to the x-axis. This is because the negative angle point is the 'mirror' of the positive angle point, reflected over the x-axis. So, the right answer is (a).
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.