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(3) Consider the matrix A=\left(\begin{array}{rrrrr} 1 & 4 & 5 & 6 & 9 \\ 3 & -2 & 1 & 4 & -1 \\ -1 & 0 & -1

& -2 & -1 \\ 2 & 3 & 5 & 7 & 8 \end{array}\right) (a) Give a basis for the row space of A. Show all working. (b) Give a basis for the null space of A. Show all working.

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