Question: 3 marks Let C be an m x k matrix, D a k x n matrix, and f a vector in Rm. Suppose v E

3 marks Let C be an m x k matrix, D a k x n matrix, and f a vector in Rm. Suppose v E R" is such that Do is a least squares solution to Cx = f. Show that the projection of f onto the columns space of CD is CDo.Q1(b) For D1) to be a, least square solution to Ca: = f, What is the linear system in terms of C and f of which .01! is a, solution? Deduce from there that v is a, least squares solution of CD1: = f

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