Which of the matrices that follow are in row echelon form Which are in reduced row

Chapter 1, Problem 1

(choose chapter or problem)

Which of the matrices that follow are in row echelon form? Which are in reduced row echelon form? (a) 1 2 3 4 0 0 1 2 (b) 1 0 0 0 0 0 0 0 1 (c) 1 3 0 0 0 1 0 0 0 (d) 0 1 0 0 0 0 (e) 1 1 1 0 1 2 0 0 3 (f) 1 4 6 0 0 1 0 1 3 (g) 1 0 0 1 2 0 1 0 2 4 0 0 1 3 6 (h) 0 1 3 4 0 0 1 3 0 0 0 0

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