Question: Let A = * (a) Solve the least squares problem Ax = b where b = = [0.5 -0.5] 0.5 -0.5 0.5 0.5 0.5

Let A = * (a) Solve the least squares problem Ax =

Let A = * (a) Solve the least squares problem Ax = b where b = = [0.5 -0.5] 0.5 -0.5 0.5 0.5 0.5 0.5 Note that the columns of A are orthonormal (why?). P = (b) Find the projection matrix P that projects vectors in R4 onto R(A) 0 1 0000 (c) Compute Ax and Pb TI Ax = Pb =

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