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Math387.IGamma Function
Math387 | Functions | See Also
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Incomplete gamma function.

Pascal
function IGamma(A: double; X: double): double; overload;
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Returns

the incomplete gamma function.

Description

The IGamma function is defined by the following equation: 

 

where Gamma is Math387.Gamma function. Depending on parameters a and x fractional or series expansion is used to calculate the incomplete Gamma function.

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