E04HDF Example Program Results The test point is 1.4600 -0.8200 0.5700 1.2100 2nd derivatives are consistent with 1st derivatives At the test point, FUNCT gives the function value 6.2273E+01 and the 1st derivatives -1.285E+01 -1.649E+02 5.384E+01 5.775E+00 H gives the lower triangle of the Hessian matrix 9.500E+00 2.000E+01 2.461E+02 0.000E+00 -9.220E+01 1.944E+02 -7.500E+00 0.000E+00 -1.000E+01 1.750E+01