Question: (1 point) Give a 4 x 4 elementary matrix E which will carry out the row operation R-7R3 R2. E 0000 Test that E

(1 point) Give a 4 x 4 elementary matrix E which will carry out the row operation R-7R3 R2. E 0000 Test that E actually works for carrying out this row operation by computing the product EA for the matrix EA= 3 57 -2 2 A= -2 4 -1 2 Note: In order to get credit for this problem all answers must be correct

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