Bessel_k_nu
Definition:
/math-d9f3f5623f4304ccbe65e14f88f944bb.png "k\_nu =bessel\_k\_nu(x,nu)")
evaluates an approximation to the modified Bessel function of the second kind /math-f77c69b6412962600258514eda766aeb.png "K_{\upsilon /4}(x)")
, where the order =-3, -2, -1, 1, 2 or 3 and x is real and positive. For negative orders the formula
/math-c53304141abbf091f03fabe86e9cb416.png "K_{-\upsilon /4}(x)=K_{\upsilon /4}(x)")
is used.
For more information please review the s18efc function in the NAG document.
Parameters:
- x (input, double)
- The argument x of the function.
- Constraints:
x>0.0.
/math-0288bde0c2d593f2b5766f61b826a650.png "nu")
(input, int)- The argument
/math-4fdefba26320686bb2bd0579a0df421c.png "\nu")
of the function. - Constraints:
/math-444b9207f37c2461a13f9bd94a0ba099.png "1\leq abs(nu)\leq 3")
/math-b92db2d18cf971dd3bf5f9f50190bfa0.png "k\_nu")
(output, double)- Approximation of the modified Bessel function of the second kind.