How to limit fsolve to find solution in Real numbers domain

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Jagadeesh Korukonda 2022-8-24

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编辑： Matt J 2022-8-24

Suppose, If I have some set of non-linear equations. I want to solve those equations with fsolve, but I want solution only in real values not imaginary ones. Is there any way to restrict fsolve in this way?

Thanks in advance

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Matt J 2022-8-24

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编辑：Matt J 2022-8-24

That will automatically be the case, as long as the equation functions you have provided are real-valued.

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Matt J 2022-8-24

编辑：Matt J 2022-8-24

If solve the equation it will give real root and imaginary root for different intial values.

No, that shouldn't happen.

There is no guarantee that fsolve will succeeed in finding a root, but the value it returns should always be real, assuming the cubic polynomial coefficients and the initial guess x0 are real.

Jagadeesh Korukonda 2022-8-24