Calculus 8th Edition

Published by Cengage
ISBN 10: 1285740629
ISBN 13: 978-1-28574-062-1

Chapter 10 - Parametric Equations and Polar Coordinates - 10.5 Conic Sections - 10.5 Exercises - Page 720: 14

Answer

Foci: $( 0, \pm 2 )$ Vertices : $( 0,\pm 5/2)$
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Work Step by Step

$100x^2+36y^2=225$ Rewrite as $\frac{x^2}{(3/2)^2}+\frac{y^2}{(5/2)^2}=1$ $c^2=a^2-b^2=4$ $c=2$ Foci: $( 0, \pm 2 )$ Vertices : $( 0,\pm 5/2)$
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