Multivariable Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 0-53849-787-4
ISBN 13: 978-0-53849-787-9

Chapter 10 - Parametric Equations and Polar Coordinates - 10.5 Exercises - Page 700: 45

Answer

$\frac{(y-1)^{2}}{25}-\frac{(x+3)^{2}}{39}=1$

Work Step by Step

$\frac{(y-k)^{2}}{a^2}-\frac{(x-h)^{2}}{b^2}=1$ Here, $a=\frac{|-4-6|}{2}=5$ and $c=5$ from the given points we can write $\frac{(y-k)^{2}}{5^2}-\frac{(x+3)^{2}}{b^2}=1$ $2c=|-7-9|$ $c=8$ $c^2=a^2+b^2$ $8^2=5^2+b^2$ $b^2=39$ The equation of the hyperbola is $\frac{(y-1)^{2}}{25}-\frac{(x+3)^{2}}{39}=1$
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