The outputs of fsolve function are complex

Hi all! I use the fsolve function by incorperating a interpreted matlab function block.The outputs of fsolve function are complex and the iteration is rather slow, but my expectation is real number, so what's the problem, how can i debug it?

Answer 1

[Youssef Khmou]

hi,

it depends on the input function, for example the solution may contain a logarithm of negative value which is complex number,

you can use the 'abs' or 'real' function to the output.