Question: Part 2: Let A = al a2 . . . am be any n X m matrix, and let B = b1 b2 ... bm

Part 2: Let A = al a2 . . . am be any n X m matrix, and let B = b1 b2 ... bm be a matrix which is equivalent to A (i.e. can be obtained from A via elementary row operations) and is in row echelon form. Let X1, X2, . . ., Cm E R be given, and suppose that x1b1 + x2b2 + . . . + mom = 0. Prove that xia1 + xzaz + . . . + Cmam = 0 as well

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