Solver Stop Prematurely as new equation added

Question

Muhd Jasrim 2024-6-19

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https://ww2.mathworks.cn/matlabcentral/answers/2129851-solver-stop-prematurely-as-new-equation-added

评论： Alex Sha 2024-6-22

Hi, How do I solve this? keep getting the solve stop prematurely. May I know what should I do? this happen when i try added another equation in my model. Any Suggestion?

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Alex Sha 2024-6-22

@Muhd Jasrim please give out the full code in text, not in picture

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Answer 1

Torsten 2024-6-19

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https://ww2.mathworks.cn/matlabcentral/answers/2129851-solver-stop-prematurely-as-new-equation-added#answer_1473951

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Use an options structure for "fsolve" as

options = optimset('MaxFunEvals',100000,'MaxIter',100000)
sol = fsolve(...,options)

and try again.

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Muhd Jasrim 2024-6-19

options = optimset('MaxFunEvals',100000,'MaxIter',100000)

steady_state_values = fsolve(steady_state_fun, initial_guess, options);

am I right, the way I wrote the codes? because it still prematurely stop. Does this relate to the equation I inserted?

Thankyou :)

Torsten 2024-6-19

编辑：Torsten 2024-6-19

在 MATLAB Online 中打开

The options

options = optimset('MaxFunEvals',100000,'MaxIter',100000)

give "fsolve" more iterations to converge (if the solver stops now prematurely, it should show that the Maximum Number of Iterations (10000) has been reached).

If this doesn't help and the problem came after inserting the new equation, you should think about why the new equation made your problem that more difficult or even unsolvable.

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