Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter P - Section P.7 - Equations - Exercise Set: 40

Answer

$R_1=\frac{1}{\frac{1}{R_2}-\frac{1}{R}}$

Work Step by Step

$\frac{1}{R}=\frac{1}{R_1}+\frac{1}{R_2}$ $\frac{1}{R_1}=\frac{1}{R_2}-\frac{1}{R}$ $1=R_1(\frac{1}{R_2}-\frac{1}{R})$ $R_1=\frac{1}{\frac{1}{R_2}-\frac{1}{R}}$
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