Hello,

how can the Newton algorithm for nonlinear equations be used for an overdetermined system? The examples only use a 4x4 or a 2x2 system. My system can be 6x3 and the Jacobian should also be computed by NR.

Thanks
kon

So, is the question too trivial? I still have no solution for that problem. Any advice is appreciated.

Thanks,
kon

Hi Kon,

You can't solve a 6x3 problem with Newton's method directly. The system is over (or under) determined. If it's overdetermined, you need to make it e.g. into a least squares problem, and then use Levenberg-Marquard or some similar method.