optimization/test_functions/himmelblau_hessian.m

   1 function H = himmelblau_hessian(x1, x2)
   2   ##
   3   ## The Hessian of the Himmelblau function. See himmelblau.m for more
   4   ## information.
   5   ##
   6   H = zeros(2,2);
   7   H(1,1) = 12*x1^2 + 4*x2 - 42;
   8   H(1,2) = 4*x1 + 4*x2;
   9   H(2,1) = H(1,2);
  10   H(2,2) = 12*x2^2 + 4*x1 - 26;
  11 end