Description Usage Arguments Details Value Author(s) References See Also
Evaluates the second derivative of the second derivative of the Ratio of First and Zeroth Order Bessel Functions.
1 |
kappa |
non-negative numeric value at which to evaluate the second derivative of A1 function. |
Formula (3.49) of Fisher (1993), pag. 52 is implemented.
The function uses A1
, A1FirstDerivative
and besselI
.
The value of the second derivative of A1 function in the point kappa
.
Claudio Agostinelli and Alessandro Gagliardi.
N.I. Fisher (1993) Statistical Analysis of Circular Data, Cambridge University Press.
A1
, A1FirstDerivative
, besselI
, A1inv
.
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