Gradients and Hessian matrix at the point with coordinates: x = ( 0.000000 0.000000 ) Vector of gradient of the D-type function number 9: grad D(x) = ( 1.400213 -0.616694 ) Vector of gradient of the D2-type function number 9: grad D2(x) = ( 1.422313 -0.703983 ) Hessian matrix of the D2-type function number 9: -10.261060 0.173888 0.173888 -10.902981