nag_monotonic_deriv (e01bgc) Example Program Results
                            Interpolated      Interpolated
       Abscissa                Value           Derivative
         7.9900               0.0000            0.000e+00
         9.1910               0.4640            6.060e-01
        10.3920               0.9645            4.569e-02
        11.5930               0.9965            9.917e-03
        12.7940               0.9992            6.249e-04
        13.9950               0.9998            2.708e-04
        15.1960               0.9999            2.809e-05
        16.3970               1.0000            2.034e-05
        17.5980               1.0000            1.308e-05
        18.7990               1.0000            6.297e-06
        20.0000               1.0000           -3.388e-21