Theorem 4 A square matrix A is invertible if and only if det A # 0. 2 3 0 Example: Is 1 3 4 invertible? 12
Theorem 4 A square matrix A is invertible if and only if det A # 0. 2 3 0 Example: Is 1 3 4 invertible? 12
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:Theorem 4 A square matrix A is invertible if and only if det A # 0.
2 30
Example: Is 1 3 4 invertible?
12
Transcribed Image Text:Example: Find the determinant by row reduction to echelon form given
1
5
-4
9
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