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Assume all matrices are 3 × 3 prove that if two rows of A are interchanged...

Assume all matrices are 3 × 3 prove that if two rows of A are interchanged to produce B an upper
triangular matrix, then det(A) = − det(B)
Math   Advanced-Math   
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This is the required proof.I hope the answer will help you.Expecting a thumbs up if you are satisfied with the work,it will help me a lot.Thank you.

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