Calculus: Early Transcendentals 8th Edition

Published by Cengage Learning
ISBN 10: 1285741552
ISBN 13: 978-1-28574-155-0

Chapter 10 - Section 10.3 - Polar Coordinates - 10.3 Exercises - Page 666: 20

Answer

The Cartesian form of the expression is $\frac{1}{2x}=y$, which is a rotated hyperbola.

Work Step by Step

We are given that $r^{2}sin2\theta=1$. Using the double-angle identity for sine, we can rewrite the expression as $r^{2}(2sin\theta cos\theta)=1$. We can rewrite this expression as $2(rsin\theta)(rcos\theta)=1$. Using the polar-to-cartesian substitutions of $x=rcos\theta$ and $y=rsin\theta$, we get $2xy=1$. Solving for y, we get $\frac{1}{2x}=y$ and we can see that the graph is that of a scaled reciprocal function, which is a rotated hyperbola.
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.