An mxn lower triangular matrix is one whos entries above the main diagonal are 0's. When is a sqaure lower triangular matrix invertible? Justify your answer.

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter7: Systems Of Equations And Inequalities
Section7.6: Solving Systems With Gaussian Elimination
Problem 4SE: Can a matrix whose entry is 0 on the diagonal be solved? Explain why or why not. What would you do...
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An mxn lower triangular matrix is one whos entries above the main diagonal are 0's. When is a sqaure lower triangular matrix invertible? Justify your answer.

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