Question: 3. [2 points each] (a) If A is an m x n matrix, what are the possible values of nullity of A? (b) If A

3. [2 points each] (a) If A is an m x n matrix, what are the possible values of nullity of A? (b) If A is an m x n matrix and let B be the RREF of A. Show by example that col(A) # col(B)

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