nag::ad::e04fc Tangent over Tangent Example Program Results Sum of squares = 8.214877306579e-03 Solution point = 8.241056010522e-02 1.133036105199e+00 2.343695165997e+00 Residuals : -5.881091047379e-03 -2.653454565346e-04 2.746917200908e-04 6.541540419146e-03 -8.229912142825e-04 -1.299494935154e-03 -4.463111501296e-03 -1.996295340591e-02 8.221604273377e-02 -1.821196241333e-02 -1.481116961926e-02 -1.470998042816e-02 -1.120799844300e-02 -4.204034472674e-03 6.807857438304e-03 Derivatives calculated: Second order tangents Sum of Hessian elements of sum of squares fsumsq w.r.t. parameters y and t: sum_ij [d2fsumsq/dall2]_ij = 1.563059505366e+00 Sum of Hessian elements of solution points x w.r.t. parameters y and t: sum_ij [d2x/dall2]_ij = 6.902926807059e+00