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Function Input Arguments

Argument

Description

Used by Functions

A, b

The matrix A and vector b are, respectively, the coefficients of the linear inequality constraints and the corresponding right-side vector: A*x ≤ b.

fgoalattain, fmincon, fminimax, fseminf, linprog, lsqlin, quadprog

Aeq, beq

The matrix Aeq and vector beq are, respectively, the coefficients of the linear equality constraints and the corresponding right-side vector: Aeq*x = beq.

fgoalattain, fmincon, fminimax, fseminf, linprog, lsqlin, quadprog

C, d

The matrix C and vector d are, respectively, the coefficients of the over or underdetermined linear system and the right-side vector to be solved.

lsqlin, lsqnonneg

f

The vector of coefficients for the linear term in the linear equation f'*x or the quadratic equation x'*H*x+f'*x.

linprog, quadprog

fun

The function to be optimized. fun is either a function handle to a file or is an anonymous function. See the individual function reference pages for more information on fun.

fgoalattain, fminbnd, fmincon, fminimax, fminsearch, fminunc, fseminf, fsolve, fzero, lsqcurvefit, lsqnonlin

goal

Vector of values that the objectives attempt to attain. The vector is the same length as the number of objectives.

fgoalattain

H

The matrix of coefficients for the quadratic terms in the quadratic equation x'*H*x+f'*x. H must be symmetric.

quadprog

lb, ub

Lower and upper bound vectors (or matrices). The arguments are normally the same size as x. However, if lb has fewer elements than x, say only m, then only the first m elements in x are bounded below; upper bounds in ub can be defined in the same manner. You can also specify unbounded variables using -Inf (for lower bounds) or Inf (for upper bounds). For example, if lb(i) = -Inf, the variable x(i) is unbounded below.

fgoalattain, fmincon, fminimax, fseminf, linprog, lsqcurvefit, lsqlin, lsqnonlin, quadprog

nonlcon

The function that computes the nonlinear inequality and equality constraints. Passing Extra Parameters explains how to parameterize the function nonlcon, if necessary.

See the individual reference pages for more information on nonlcon.

fgoalattain, fmincon, fminimax

ntheta

The number of semi-infinite constraints.

fseminf

options

A structure that defines options used by the optimization functions. For information about the options, see Optimization Options Reference or the individual function reference pages.

All functions

seminfcon

The function that computes the nonlinear inequality and equality constraints and the semi-infinite constraints. seminfcon is the name of a function file or MEX-file. Passing Extra Parameters explains how to parameterize seminfcon, if necessary.

See the function reference pages for fseminf for more information on seminfcon.

fseminf

weight

A weighting vector to control the relative underattainment or overattainment of the objectives.

fgoalattain

xdata, ydata

The input data xdata and the observed output data ydata that are to be fitted to an equation.

lsqcurvefit

x0

Starting point (a scalar, vector or matrix).

(For fzero, x0 can also be a two-element vector representing a finite interval that is known to contain a zero.)

All functions except fminbnd and linprog

x1, x2

The interval over which the function is minimized.

fminbnd

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