Elementary Linear Algebra 7th Edition

Published by Cengage Learning
ISBN 10: 1-13311-087-8
ISBN 13: 978-1-13311-087-3

Chapter 3 - Determinants - 3.1 The Determination of a Matrix - 3.1 Exercises: 7

Answer

$-24$

Work Step by Step

$\left| \begin{array}{cc} -7 & 6 \\ \frac{1}{2} & 3 \end{array} \right|=ad-bc=-7\times3-6\times\frac{1}{2}=-21-3=-24$
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