BesselInu¶

BesselInu(x, nu)¶

Modified first kind Bessel function of order nu.

$\forall x \in \Rset, \quad \mathrm{I}_nu(x) = \left(\frac{x}{2}\right)^\nu\sum_{m=0}^\infty\frac{1}{m!\Gamma(m+1+\nu)!}\left(\frac{x}{2}\right)^{2m}$