Problem 2. Given the matrix, determine its row and column spaces. (a) $A = \begin{pmatrix} 1 & 2 & 1 & 2 & 1 \\ 0 & 1 & 0 & 2 & -2 \end{pmatrix}$ (b) $B = \begin{pmatrix} 0 & 0 & 3 & 1 \\ 4 & -1 & -2 & -2 \\ -2 & -2 & -3 & 3 \end{pmatrix}$
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