Linear Algebra - LU Factorization

[ashah99]

Homework Statement

Please see attached photo for problem statement.

Relevant Equations

LU Factorization concepts

Hello all, I have a problem related to LU Factorization with my work following it. Would anyone be willing to provide feedback on if my work is a correct approach/answer and help if it needs more work? Thanks in advance.

Problem:

Work:

 

[benorin]

What is this letter,

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