kappa.Rd
The kappa version of a generating function \(\psi\) is
defined as \(\kappa(x) = \psi(x) + x \psi'(x)\).
igl_kappa
takes \(\psi\) to be the IGL generating
function, igl_gen()
.
y_igl_kappa(x, alpha) y_igl_kappa_D(x, alpha) y_igl_kappa_inv(p, alpha)
x | Numeric argument of the kappa function. Vectorized. |
---|---|
alpha | Parameter of the IGL generating function, |
p | Numeric argument of the inverse function. Vectorized. Between 0 and 1, inclusive. |
igl_kappa_D()
is the derivative; igl_kappa_inv()
is the inverse.