nag::ad::c05ay Vector Tangent Example Program Results Derivatives calculated: First order tangents Solution: x = 3.517338158057e-01 Derivative of solution x w.r.t. parameter r: dx/dr(x)[0] = -1.301047543306e-01 dx/dr(x)[1] = -2.602095086613e-01 dx/dr(x)[2] = -2.602095086613e-01