The input value of Cout has no effect. The output value of Cout is a square matrix with the same number of rows as xin. The matrix Cout is an estimate of the covariance of the optimal value for x as an estimate of the true parameter vector.
Extended Least Squares
Syntax relative(function y, function F, function dF, ...
M, xin, xlow, xup, eps, maxstp, mitr, ...
xout, vout, Rout, gout, lamout, Cout)
See Also nlsq , dnlsq http://www.omatrix.com/manual/relative.htm