Precalculus: Mathematics for Calculus, 7th Edition

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

Chapter 10 - Section 10.5 - Inverses of Matrices and Matrix Questions - 10.5 Exercises - Page 732: 10

Answer

$B^{-1}=\left[\begin{array}{lll} -1 & 1 & 0\\ 33 & -31 & 3\\ 13 & -12 & 1 \end{array}\right]$ Please see image in step-by-step

Work Step by Step

Calculator: online matrix calculator at desmos.com/matrix The very small decimal numbers should be rounded to 0. Screenshots:
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