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

Republic of the Philippines SOCIAL SECURITY SYSTEM RS-5 CONTRIBUTIONS PAYMENT RETURN (06-2012) Please read the instructions below before accomplishing this form. Print all information in capital letters and use black ink only. (THIS IS YOUR OFFICIAL...