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.

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- May 13th 2010, 08:54 PMktcyper03Least-squares Solution z of the Overdetermined System
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. - May 14th 2010, 03:21 AMTKHunny
If your 4x2 matrix is A, have you considered multiplying from the left with $\displaystyle \left[\left(A^{T}\cdot A\right)^{-1}\cdot A^{T}\right]$?