Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 10 - Section 10.6 - Determinants and Cramer's Rule - 10.6 Exercises: 13

Answer

$\frac{1}{8}$

Work Step by Step

Formula: ad-bc $(\frac{1}{2}*\frac{1}{2})-(1*\frac{1}{8})$ $\frac{1}{4}-\frac{1}{8}$ $\frac{1}{8}$ is your answer.
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