(a) Write down the 3 by 3 matrices that produce these elimination steps: E21 subtracts 4 times row 1 from row 2 E31 adds 7 times row 1 to row 3 E32 subtracts 3 times row 2 from row 3 • P exchanges rows 1 and 2, then rows 2 and 3
(a) Write down the 3 by 3 matrices that produce these elimination steps: E21 subtracts 4 times row 1 from row 2 E31 adds 7 times row 1 to row 3 E32 subtracts 3 times row 2 from row 3 • P exchanges rows 1 and 2, then rows 2 and 3
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter2: Systems Of Linear Equations
Section2.2: Direct Methods For Solving Linear Systems
Problem 15EQ: 15. Reverse the elementary row operations used in Example 2.9 to show that we can convert
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