SpecFunc_BesselI0¶

SpecFunc_BesselI0(x)¶

Modified first kind Bessel function of order 0.

$\forall x \in \Rset, \quad \mathrm{I}_0(x) = \sum_{m=0}^\infty\frac{1}{m!^2}\left(\frac{x}{2}\right)^{2m}$