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IncompleteGamma

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Interactively run this function

Answer  
5.93798369594444
Explanation:
If x is large then the incomplete gamma function tends to the gamma function and Gamma(4) = 3! = 6

Parameter NameInputAn input expression?
a
x

Calculation description
Time-stamp calculation?  
  


Function Description

The incomplete gamma function,  is defined as:

 

 

Here  is the gamma function.

 

If  then the website evaluates the incomplete gamma function using the following power series expansion:

 

 

If  then the website evaluates the function using the following continued fraction:

 

 


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