K ktcyper03 Apr 2010 26 0 May 13, 2010 #1 Find the Least-squares Solution z of the Overdetermined System |-3 1 | | 70 | | 1 1 | x = | 21 | |-7 1 | | 110 | | 5 1 | |-35 | Excuse my poorly typed notation as that is supposed to be a matrix times x = another matrix.

Find the Least-squares Solution z of the Overdetermined System |-3 1 | | 70 | | 1 1 | x = | 21 | |-7 1 | | 110 | | 5 1 | |-35 | Excuse my poorly typed notation as that is supposed to be a matrix times x = another matrix.

T TKHunny Aug 2007 3,171 860 USA May 14, 2010 #2 If your 4x2 matrix is A, have you considered multiplying from the left with \(\displaystyle \left[\left(A^{T}\cdot A\right)^{-1}\cdot A^{T}\right]\)? Reactions: CaptainBlack

If your 4x2 matrix is A, have you considered multiplying from the left with \(\displaystyle \left[\left(A^{T}\cdot A\right)^{-1}\cdot A^{T}\right]\)?