Question: Having trouble with this problem N (4pts) Consider the matrix A = |1 -1 2 1 (a) Find the projection matrix Pcol(A). 3 (b) Use

Having trouble with this problem

N (4pts) Consider the matrix A = |1 -1 2 1 (a) Find the projection matrix Pcol(A). 3 (b) Use Pool(A) to calculate projcol(A) 0 . Explain the result. 3 1 (c) Use Pool(A) to calculate projcol(A) 1 . Explain the result. -1

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