Math387.JGamma Method

Math387

Overload List

#SignatureDescription
1function JGamma(A: Double; const X: TCplx): TCplx;Complement to the incomplete gamma function.
2function JGamma(A: Double; X: Double): Double;Complement to the incomplete gamma function.

Overload 1: function JGamma(A: Double; const X: TCplx): TCplx;

Complement to the incomplete gamma function.

#NameTypeDescription
1ADoublescalar
2XTCplx

Returns: TCplx (complex)

Remarks:

Complex version.

Overload 2: function JGamma(A: Double; X: Double): Double;

Complement to the incomplete gamma function.

#NameTypeDescription
1ADoublescalar
2XDoublescalar

Returns: Double - the complement to the incomplete gamma function.

Remarks:

The JGamma function is defined by the following equation:

JGamma(x,a)=1Γ(a)∫x∞ta−1exp⁡(−t)dt=1−IGamma(x,a)\text{JGamma}\left(x,a\right)= \frac{1}{\Gamma(a)} \int _x ^\infty t^{a-1} \exp (-t) dt = 1 - \text{IGamma}(x,a)

where Gamma is Math387.Gamma function.

See Also: Math387.IGamma