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(b) Given that 1 0-2 A=2 0 22 4 1 31 (i) Determine the rank of matrix A by reducing the matrix to its reduced

(b) Given that 1 0-2 A=2 0 22 4 1 31 (i) Determine the rank of matrix A by reducing the matrix to its reduced row- echelon form. (Marks: 10) Show the number of free variables and the nullity of A. (Marks: 5)

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