(3) §2.3, Ex.2.3.2 (No explanation is required for this problem.). Construct a 3 x 4 matrix A and 3 x 1 columns b and c such that [A|b| is the augmented matrix for an inconsistent system, but [Ac] is the augmented matrix for a consistent system. (4) §2.3, Ex.2.3.3. If A is an m x n matrix with rank(A) =m, explain why the system [A|b] must be consistent for every right-hand side h

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