Answer
$A^{-1}$
Work Step by Step
If a matrix is encoded using an invertible matrix A then the message can be decoded by multiplying the coded row matrices by $A^{-1}$.
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 10 - 10.5 - Applications of Matrices and Determinants - 10.5 Exercises - Page 755: 6
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
