# Incomplete gamma function Calculator

## Calculates the Incomplete gamma functions of the first and second kind γ(a,x) and Γ(a,x).

 a x x≧0 6digit10digit14digit18digit22digit26digit30digit34digit38digit42digit46digit50digit
 $\normal Incomplete\ gamma\ functions\\[10](1)\ the\ 1st\ kind\\\hspace{60}\gamma(a,x)= {\large\int_{\tiny 0}^ {\hspace{25}\small x}}t^{a-1}e^{-t}dt\\[10](2)\ the\ 2nd\ kind\\\hspace{60}\Gamma(a,x)={\large\int_{\small x}^ {\hspace{25}\tiny \infty}}t^{a-1}e^{-t}dt\\[10](3)\ \gamma(a,x)+\Gamma(a,x)=\Gamma(a)\\$

Incomplete gamma function
 [1-10] /18 Disp-Num5103050100200
[1]  2019/03/08 02:10   Female / 30 years old level / A homemaker / Useful /
Purpose of use
Trying to determine the proper flour to yeast ratio for my nephew's birthday cake.
[2]  2018/06/17 04:51   Female / 30 years old level / An engineer / Very /
Purpose of use
TO CHECK IF THE RESULTS FROM R ARE CORRECT
Comment/Request
VERY USEFUL AND CLEAR
[3]  2018/05/02 18:49   Male / Under 20 years old / High-school/ University/ Grad student / Very /
Purpose of use
Just studying for fun
[4]  2016/06/22 14:09   Female / 20 years old level / High-school/ University/ Grad student / A little /
Purpose of use
Solve tutorial question
[5]  2015/06/24 20:34   Male / 30 years old level / An office worker / A public employee / Very /
Purpose of use
Studying for an actuarial exam.
[6]  2015/05/24 14:56   Male / 20 years old level / High-school/ University/ Grad student / Very /
Purpose of use
Homework to solve an integral
[7]  2015/02/25 04:56   Male / 60 years old level or over / A teacher / A researcher / Very /
Purpose of use
Doing a calculation at work.
[8]  2014/09/28 22:59   Male / 60 years old level or over / Self-employed people / Very /
Purpose of use
To verify my own results for function I am coding to facilitate another calculation. My results matched except for a = negative integer, but I found an error and now we match for all a and x. I also require complex a and x. Mathematica formulas at functions.wolfram.com/GammaBetaErf/Gamma2/03/01/02/ show how to compensate for branch cuts.
Comment/Request
please disregard previous suspicion of an error -- found a bug in my code.
[9]  2014/09/13 03:55   Male / 20 years old level / A teacher / A researcher / Very /
Purpose of use
Looking for how to compute the value of incomplete gamma functions.
Comment/Request
Could you please provide the relevant formula that can be used in a comptuer program to evaluate the function?
[10]  2014/05/08 20:03   Male / 20 years old level / An engineer / A little /
Purpose of use
integral
Comment/Request
source code for programming

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