Linear Algebra and Its Applications (5th Edition)

by Lay, David C.; Lay, Steven R.; McDonald, Judi J.

Published by Pearson

ISBN 10: 032198238X

ISBN 13: 978-0-32198-238-4

Chapter 2 - Matrix Algebra - 2.2 Exercises - Page 112: 28

Answer

See solutioin

Work Step by Step

$A=\begin{bmatrix} row_1(A)\\ row_2(A)\\ row_3(A)\\ \end{bmatrix}$ $EA=\begin{bmatrix} 1&0&0\\ 0&1&0\\ -4&0&1\\ \end{bmatrix}\begin{bmatrix} row_1(A)\\ row_2(A)\\ row_3(A)\\ \end{bmatrix}=\begin{bmatrix} row_1(A)\\ row_2(A)\\ -4*row_1(A)+row_3(A)\\ \end{bmatrix}$

Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After 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.

GradeSaver will pay $15 for your literature essays

GradeSaver will pay $25 for your college application essays

GradeSaver will pay $50 for your graduate school essays – Law, Business, or Medical

GradeSaver will pay $10 for your Community Note contributions

GradeSaver will pay $500 for your Textbook Answer contributions