Let A Rmn and let x be a solution of the least squares problem Ax = b. Show that a
Chapter 5, Problem 13(choose chapter or problem)
Let A Rmn and let x be a solution of the least squares problem Ax = b. Show that a vector y Rn will also be a solution if and only if y = x + z, for some vector z N(A). [Hint: N(ATA) = N(A).] 1
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