using fsolve for real answers

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mona faraji
mona faraji 2011-4-21
i use fsolve to solve a set of nonlinear equations with two variables, i want real, not, complex answers for initial conditions that i give.
how can i do this, because almost the answers are complex.

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回答（2 个）

Sean de Wolski
Sean de Wolski 2011-4-21
doc real
Steve Grikschat
Steve Grikschat 2011-4-21
fsolve (and all other functions in the Optimization Toolbox) are not supposed to work with complex data. You need to make sure that your system only returns real data.
If you have imaginary components to your system, then do as Sean suggested and remove them using real, to solve the problem in the real domain.

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