Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 11 - Section 11.4 - Shifted Conics - 11.4 Exercises - Page 815: 42

Answer

$\frac{(x-1)^{2}}{4} - \frac{(y-2)^{2}}{32} = 1$

Work Step by Step

General Equation of a Hyperbola is: $\frac{(x-h)^{2}}{a^{2}} - \frac{(y-k)^{2}}{b^{2}} = 1$ Foci at (-2, 2) and (4,2); midpoint of the foci is the center, which is at (1,2). h = 1, and k=2 c (distance from focus to center) is equal to 3 Point through (3,2) Thus so far the equation is $\frac{(x-1)^{2}}{a^{2}} - \frac{(y-2)^{2}}{b^{2}} = 1$ Substitute x=3 and y=2 $\frac{(3-1)^{2}}{a^{2}} - \frac{(2-2)^{2}}{b^{2}} = 1$ $\frac{4}{a^{2}} = 1$ Thus $a^{2} = 4$ $c^{2} = a^{2} + b^{2}$ $6^{2} = 4 + b^{2}$ $b^{2} = 32$ So the final equation is $\frac{(x-1)^{2}}{4} - \frac{(y-2)^{2}}{32} = 1$
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.