I have a nonlinear solver for equation $g= c_1f(x_1,y_1)+c_2f(x_2,y_2)$. Note that $c_1$ is much bigger than $c_2$. So after using Levenberg–Marquardt algorithm, I could only get $x_1$, $y_1$ and $c_2f(x_2,y_2)$ is ignored by the solver. Is there a proper noun for this phenomenon?

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    $\begingroup$ Scaling problem. $\endgroup$ – Mark L. Stone Jan 22 '20 at 13:15
  • $\begingroup$ This might be the answer I've been looking for. Thanks a lot! $\endgroup$ – qqq666 Jan 24 '20 at 9:53

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