Question: Which three matrices E21, E31, E32, put A into triangular form U? 1 1 01 41- A = 4 6 1 and E32E31E21A =

Which three matrices E21, E31, E32, put A into triangular form U? 1 1 01 41- A = 4 6 1 and E32E31E21A = U -2 2 0 Multiply those E's to get one matrix M that does elimination: MA = U.

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