Matlab Newton iteration

% matlab script to demonstrate Newton iteration in higher dimensions% the system of nonlinear equations to be solved is defined in function f% the Jacobian of f is defined in function JfxOld = input('Enter initial guess: ');tol = input('Enter error tolerance: ');error = 1;count = 0;while (error > tol),   % this is what you want to do ...   %   xNew = xOld - inv(Jf(xOld))*f(xOld)   % this is how you do it ...   xNew = xOld - Jf(xOld)\f(xOld)   count = count + 1   error = norm(xNew-xOld)+4*eps*norm(xNew)   xOld = xNew;   pauseend