15.1.3 BesselI1(value1)

Function returns the modified Bessel function of order 1 of the double argument.

The input arguments can be one of the following data types: double, integer, float.

The returned value type will be double.

Function Result

besselI1(432.98)

2.1043808863643512E186

besselI1(31)

2.055972795294565E12