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: 32

Answer

$ \displaystyle \left[\begin{array}{ll} 1 & 0 & 0 & 0\\ -0.4 & 0.2 & 0 & 0\\ -1.06667 & -0.133333 & 0.333333 & 0\\ -2.46667 & 0.0666667 & -0.66666667 & 1 \end{array}\right] $

Work Step by Step

The question asks to use a graphing calculator to find the inverse of the matrix. Work is done with the online matrix calculator desmos.com/matrix See image below.
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