1 2 3 4 5
function y = f(x) y = 3*x(1)^2 + 2*x(1)*x(2) + x(2)^2 - 4*x(1) + 5*x(2) ; endfunction [xval, fval, status, gradient, hessian] = intfminunc(f,[1], [1 2],[2 6])