nag_opt_estimate_deriv (e04xac) Example Program Results

Estimate gradient and Hessian diagonals given function only

Function value:   2.1500e+02
Estimated gradient vector
  3.0600e+02   -1.4400e+02   -2.0000e+00   -3.1000e+02  
Estimated Hessian matrix diagonal
  4.8200e+02    2.1200e+02    5.7995e+01    4.9000e+02  

Estimate full Hessian given function and gradients

Function value:   2.1500e+02
Computed gradient vector
  3.0600e+02   -1.4400e+02   -2.0000e+00   -3.1000e+02  
Estimated Hessian matrix
  4.8200e+02    2.0000e+01    0.0000e+00   -4.8000e+02  
  2.0000e+01    2.1200e+02   -2.4000e+01    0.0000e+00  
  0.0000e+00   -2.4000e+01    5.8000e+01   -1.0000e+01  
 -4.8000e+02    0.0000e+00   -1.0000e+01    4.9000e+02