<-- Previous || Up || Next -->

Bessel I1 Function
Math Engineering Class

Public Function BesselI1( _
    ByVal vX As Variant _
    ) As Variant

Compute the modified (hyperbolic) Bessel function of the first kind of order one.

    BesselI1(-.5) = -0.257894305390896
    BesselI1(0.0) = 0
    BesselI1(0.5) = 0.257894305390896
    BesselI1(5.0) = 24.3356421424505
    BesselI1(5.0) = BesselI(5.0, 1)
See also:
    BesselI1E Function
    BesselI0 Function
    BesselI Function
    BesselK1 Function
    DBESI1 Function
vX: Function returns Null if vX is Null or cannot be fixed up to a Double precision floating point number.

Copyright 1996-1999 Entisoft
Entisoft Tools is a trademark of Entisoft.