College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter 6 - Matrices and Determinants - Concept and Vocabulary Check - Page 638: 1


$\left[\begin{array}{ll} 1 & 0\\ 0 & 1 \end{array}\right]$

Work Step by Step

The multiplicative identity matrix $I_{n}$ is an $n\times n$ matrix with 1s down the main diagonal from upper left to lower right and 0s elsewhere. $I_{2}=\left[\begin{array}{ll} 1 & 0\\ 0 & 1 \end{array}\right]$
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