How to limit fsolve to find solution in Real numbers domain

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

Answer 1

[Matt J]

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

[Jagadeesh Korukonda]

what I mean is, let us consider a cubic equation. It has one real root and two imaginary roots. If solve the equation it will give real root and imaginary root for different intial values.

I don't want like that.

my need is, for any intial value it should return a real solution only (if the eqn has real solution)

[Matt J]

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]

ok got it, Thanks @Matt J