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Bessel I0E Function
Math Engineering Class

Public Function BesselI0E( _
    ByVal vX As Variant _
    ) As Variant

Compute the exponentially scaled modified (hyperbolic) Bessel function of the first kind of order zero.

Examples: 
    BesselI0E(-.5) = 0.645035270449149
    BesselI0E(0.0) = 1
    BesselI0E(0.5) = 0.645035270449149
    BesselI0E(5.0) = 0.183540812609328
    BesselI0E(5.0) = BesselIE(5.0, 0)
See also: 
    BesselI0 Function
    BesselI1E Function
    BesselIE Function
    BesselI Function
    BesselK0E Function
    DBSI0E Function
vX: Function returns Null if vX is Null or cannot be fixed up to a Double precision floating point number.

BesselI0E(X) calculates the double precision exponentially scaled modified (hyperbolic) Bessel function of the first kind of order zero for double precision argument X. The result is the Bessel function I0(X) multiplied by EXP(-ABS(X)).

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