(a) What matrix E has the same effect as these three steps? Subtract row 1 from row 2
Chapter 1, Problem 1.6.31(choose chapter or problem)
(a) What matrix E has the same effect as these three steps? Subtract row 1 from row 2, subtract row 1 from row 3, then subtract row 2 from row 3. (b) What single matrix L has the same effect as these three reverse steps? Add row 2 to row 3, add row 1 to row 3, then add row 1 to row 2.
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