Question: Consider the vector and the matrix D 11123 3 1 R5 -2 3 1] A 01-1 5 2 R5 0 0 1 -4 -2]

Consider the vector and the matrix D 11123 3 1 R5 -2

Consider the vector and the matrix D 11123 3 1 R5 -2 3 1] A 01-1 5 2 R5 0 0 1 -4 -2] a) (4 marks) Determine the nullspace of A. b) (3 marks) Compute the projection of b onto the nullspace of A.

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