example2_22.m

This complete matlab for neural network

options=optimset('LargeScale','off');
options=optimset(options,'MaxFunEvals', 300);

options=optimset(options,'LineSearch','cubicpoly');
%用本行参数设置时，表示计算方法为三次样条内插搜索法
%否则为混合多项式内插搜索法
x0=[-1.9,2];
JAC='[-20*x(1), 10; -1, 0; banplot2(x)]';
f='[10*(x(2)-x(1)^2),(1-x(1))]';
options = optimset (options,'Jacobian','on');
disp('[x,resnorm,residual,exitflag,output]=lsqnonlin({f,JAC},x0,[],[], options);');
[x,resnorm,residual,exitflag,output]=lsqnonlin({f,JAC},x0,[],[], options);
fval = resnorm;