Question: 7. Iterative LS: Let A E Rmxn have linearly independent columns and let b E Rm be a given vector. Further, let x denote the

7. Iterative LS: Let A E Rmxn have linearly independent columns and let b E Rm be a given vector. Further, let x denote the LS solution to the problem Ax = b. Define x(1) = 0 and for k = 0, 1, 2, .. . (k+1 ) = p( k) AT (Aac (k) - b) (a) Show that the sequence {x} converges to a as k -+ 0o. (b) Discuss the computational complexity of computing {x* } for any k > 1

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