nag::ad::d02ps Tangent over Tangent Example Program Results Derivatives calculated: Second order tangents Computational mode : algorithmic Solution computed with required tolerance 1.000000e-04 y1 = 3.044899e-05 y2 = 9.996812e-01 Sum of all Hessian elements of solution vector y w.r.t. problem parameters : sum_ijk [d2y/dr2]_ijk = -3.948811e+01