Function Output Arguments

Argument	Description	Used by Functions
`attainfactor`	The attainment factor at the solution`x`.	`fgoalattain`
`exitflag`	An integer identifying the reason the optimization algorithm terminated. See the function reference pages for descriptions of`exitflag`specific to each function, andExit Flags and Exit Messages. You can also return a message stating why an optimization terminated by calling the optimization function with the output argument`output`and then displaying`output.message`.	All functions
`fval`	The value of the objective function`fun`at the solution`x`.	`fgoalattain`,`fminbnd`,`fmincon`,`fminimax`,`fminsearch`,`fminunc`,`fseminf`,`fsolve`,`fzero`,`linprog`,`quadprog`
`grad`	The value of the gradient of`fun`at the solution`x`. If`fun`does not compute the gradient,`grad`is a finite-differencing approximation of the gradient.	`fmincon`,`fminunc`
`hessian`	The value of the Hessian of`fun`at the solution`x`. For large-scale methods, if`fun`does not compute the Hessian,`hessian`is a finite-differencing approximation of the Hessian. For the`quasi-newton`,`active-set`, or`sqp`methods,`hessian`is the value of the Quasi-Newton approximation to the Hessian at the solution`x`. SeeHessian Output.	`fmincon`,`fminunc`
`jacobian`	The value of the Jacobian of`fun`at the solution`x`. If`fun`does not compute the Jacobian,`jacobian`is a finite-differencing approximation of the Jacobian.	`lsqcurvefit`,`lsqnonlin`,`fsolve`
`lambda`	The Lagrange multipliers at the solution`x`, seeLagrange Multiplier Structures.`lambda`is a structure where each field is for a different constraint type. For structure field names, see individual function descriptions. (For`lsqnonneg`,`lambda`is simply a vector, as`lsqnonneg`only handles one kind of constraint.)	`fgoalattain`,`fmincon`,`fminimax`,`fseminf`,`linprog`,`lsqcurvefit`,`lsqlin`,`lsqnonlin`,`lsqnonneg`,`quadprog`
`maxfval`	`max{fun(x)}`at the solution`x`.	`fminimax`
`output`	An output structure that contains information about the results of the optimization, seeOutput Structures. For structure field names, see individual function descriptions.	All functions
`residual`	The value of the residual at the solution`x`.	`lsqcurvefit`,`lsqlin`,`lsqnonlin`,`lsqnonneg`
`resnorm`	The value of the squared 2-norm of the residual at the solution`x`.	`lsqcurvefit`,`lsqlin`,`lsqnonlin`,`lsqnonneg`
`x`	The solution found by the optimization function. If`exitflag> 0`, then`x`is a solution; otherwise,`x`is the value of the optimization routine when it terminated prematurely.	All functions

Function Output Arguments

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