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(Solved): 3. (5 Pts Suppose That A 4 X 7 Matrix A Has Four Pivot Columns. (a) Is Col A = R4? (b) Find Dim Nul ...


3. (5 pts Suppose that a 4 x 7 matrix A has four pivot columns. (a) Is Col A = R4? (b) Find dim Nul A. (c) Find rank A.
3. (5 pts Suppose that a 4 x 7 matrix A has four pivot columns. (a) Is Col A = R4? (b) Find dim Nul A. (c) Find rank A.

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