What Is Optimization Toolbox?

fsolveOutputArguments“Function Arguments” on page 6-2 contains general descriptions ofarguments returned by fsolve. For more information on the outputheadings for fsolve, see “Function-Specific Output Headings” on page2-82.This section provides function-specific details for exitflag and output:exitflagoutputInteger identifying the reason the algorithmterminated. The following lists the values ofexitflag and the corresponding reasons thealgorithm terminated.1 Function converged to a solution x.2 Change in x was smaller than thespecified tolerance.3 Change in the residual was smallerthan the specified tolerance.4 Magnitude of search direction wassmaller than the specified tolerance.0 Number of iterations exceededoptions.MaxIter or number offunction evaluations exceededoptions.FunEvals.-1 Algorithm was terminated by theoutput function.-2 Algorithm appears to be convergingto a point that is not a root.-3 Trust radius became too small.-4 Line search cannot sufficientlydecrease the residual along thecurrent search direction.Structure containing information about theoptimization. The fields of the structure areiterationsNumber of iterations taken8-110