nag::ad::d02bj Tangent over Tangent Example Program Results Derivatives calculated: Second order tangents Computational mode : algorithmic Hit point = 7.288287e+00 Sum of all Hessian elements of hit point x w.r.t. initial condition and parameters (alpha, beta) : sum_jk [d^2 x / d(y0, alpha, beta)^2]_jk = 1.670689e+04