Answer
$r= \frac{4}{2 + cos(θ)}$
Work Step by Step
$r= \frac{ed}{1 + e cos(θ)}$
e = 1/2, directrix (d) = 4
$r= \frac{(1/2) (4)}{1 + (1/2) cos(θ)}$
$r= \frac{2}{1 + 0.5 cos(θ)}$
$r= \frac{4}{2 + cos(θ)}$
Calculus 8th Edition
by Stewart, James
Published by
Cengage
ISBN 10:
1285740629
ISBN 13:
978-1-28574-062-1
Chapter 10 - Parametric Equations and Polar Coordinates - 10.6 Conic Sections in Polar Coordinates - 10.6 Exercise - Page 728: 1
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