NOTE the technique of finding the inverse matrix does not apply here since A is not a sq A instead. Perhaps look for an example similar to this one that was worked in class. Describe all solutions of A = 0. i=11 +73 +74 A = [1 0 -2 20-48]

Algebra and Trigonometry (6th Edition)
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ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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NOTE the technique of finding the inverse matrix does not apply here since A is not a square matrix, so it is not invertible. Find the RREF of
A instead. Perhaps look for an example similar to this one that was worked in class.
Let
Describe all solutions of A = 0.
11
+73
+74
JOOD
A =
[1 0-2
20-4
Transcribed Image Text:NOTE the technique of finding the inverse matrix does not apply here since A is not a square matrix, so it is not invertible. Find the RREF of A instead. Perhaps look for an example similar to this one that was worked in class. Let Describe all solutions of A = 0. 11 +73 +74 JOOD A = [1 0-2 20-4
Expert Solution
Step 1: reduced row echelon form

The given matrix is,

A equals open parentheses table row 1 0 cell negative 2 end cell 4 row 2 0 cell negative 4 end cell 8 end table close parentheses
R subscript 2 thin space rightwards arrow thin space R subscript 2 thin space minus 2 thin space R subscript 1
open parentheses table row 1 0 cell negative 2 end cell 4 row 0 0 0 0 end table close parentheses

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