math.cyl.bessel.i

Syntax

f := math.cyl.bessel.i(nu,x)

Get the regular modified cylindrical bessel function of nu and x.

$$I_{nu}(x) = {\sum_{k=0}^{\infty}}\frac{\frac{x}{2}^{nu+2k}}{\frac{k}{\Gamma(nu+k+1)}}$$

Returns:

f - the regular modified cylindrical bessel function.

Arguments:

nu - the order of the function x - the function argument