Bessel_k_nu_scaled
Definition:
/math-7a6979a30e1542fcae761c41f0111128.png "k\_nu\_scaled = bessel\_k\_nu\_scaled(x,nu)")
evaluates an approximation to the modified Bessel function of the second kind /math-79770b377be91d9a854cfd872b05ce15.png "e^{-x}K_{\upsilon /4}(x)")
, where the order /math-4fdefba26320686bb2bd0579a0df421c.png "\nu")
= -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 s18edc 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 of the function.
- Constraints:
/math-444b9207f37c2461a13f9bd94a0ba099.png "1\leq abs(nu)\leq 3")
/math-a1f98f7fdb6efc7cdd702b09ddf6e5f6.png "k\_nu\_scaled")
(output, double)- Approximation of the modified Bessel function of the second kind.