Example description

 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