num.deriv {sn} | R Documentation |
Computes numerical derivatives of a vector-valued function
num.deriv(coefficients, FUN, ...)
coefficients |
a vector containing the coordinates of the point where the derivatives must be evaluated |
FUN |
a vector-valued function accepting a vector argument of the same length |
... |
additional arguments to FUN
|
The function is intended for numerical evaluation of the Hessian
of a function whose gradient is given by FUN
.
Used by library SN
to obtain the second derivative of
msn.dev.grad