This project solves the calculation problem of Spherical Bessel function
>>> spherical_bessel = SphericalBesselFunction(100, 100)
>>> spherical_bessel.jn_zero(1, 0)
3.141592653589793
>>> spherical_bessel.jn_zero(1, 4)
8.182561452571242
The method was realized with approach which was represented there