2. Suppose A is the matrix 0 1 2 2 A=|0 38 7 0 0 4 2 Find all special solutions to Ar = 0 and deseribe in words the whole nullspace ot A. Describe the column space of this particular matrix A. "All combinations of the four columns" is not a sufficient answer. What is the reduced row echelon form R= rref(B) when B is the 6 by 8 block matrix A A B = A A using the same A?

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