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: 3

Answer

Focus: $(-\frac{1}{2},0)$ Directrix: $x=\frac{1}{2}$ vertex: $(0,0)$
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Work Step by Step

$2x=-y^2$ or, $y^2=4(\frac{-1}{2})x$ Thus, vertex: $(0,0)$ Focus: $(-\frac{1}{2},0)$ Directrix: $x=\frac{1}{2}$
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