Is there a way to solve complex-valued non-linear equations?

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Ahmed 2012-5-31

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回答： Hossein 2016-6-10

Hi guys,

I'm trying to solve a set of complex-valued non-linear equations, but I found that "fsolve" solves only real-valued equations. Is there another function that solves comlpex-valued equations? Or is there any way around it?

Thanks,

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Answer 1

Walter Roberson 2012-5-31

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You can use fsolve. Split each complex-valued output into two outputs, the real() and imag().

You can do the same sort of thing for each complex-valued input.

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Ahmed 2012-5-31

Thank you. I tried it but the problem now is that the solver "stopped prematurely" as it exceeded either MaxFunEvals or MaxIter. I increased them to 1e5 and 1e4 respectively, but still the same error occurs.

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Answer 2

Hossein 2016-6-10

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fsolve in some cases cannot solve the equation. try fzero, fminsearch and fminunc as well. Hopefully, fzero helps you (this function may affect better than others).