solver:division_by_a_variable_makes_model_infeasible

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solver:division_by_a_variable_makes_model_infeasible [2015/09/18 15:11] Jarungjit Parnjai |
solver:division_by_a_variable_makes_model_infeasible [2017/09/02 19:40] (current) support |
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Your first equation was 'linear' meaning all your Jacobian entires were constant. The second one (although mathematically equivalent) is treated completely different by the NLP solver (which is called by GAMS). Try to stay linear where ever you can. | Your first equation was 'linear' meaning all your Jacobian entires were constant. The second one (although mathematically equivalent) is treated completely different by the NLP solver (which is called by GAMS). Try to stay linear where ever you can. | ||

- | I recommend the [[http://www.gams.com/help/topic/gams.doc/solvers/conopt/index.html|GAMS/CONOPT manual]] for reading since it contains plenty of modeling tips for nonlinear modeling. | + | I recommend the [[https://www.gams.com/latest/docs/S_CONOPT.html|GAMS/CONOPT manual]] for reading since it contains plenty of modeling tips for nonlinear modeling. |

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