# Gaussian-integrate.

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 August 15, 2004, 06:10 Gaussian-integrate. #1 New Name. Guest   Posts: n/a Sponsored Links Can anyone tell me how I can integrate the area under a gaussian distribution? Under a particular portion of it. Also, when I multiply a gaussian by another function, how do I integrate that. There appears to be no analytical solution to the integral of a gaussian function. Thank you.

 August 15, 2004, 06:56 Re: Gaussian-integrate. #2 Pratap Guest   Posts: n/a do it numerically. Pratap

 August 15, 2004, 13:15 Re: Gaussian-integrate. #3 New Name. Guest   Posts: n/a Are there any ways of doing this without resorting the maple/mathematica or other software? Surely there must be some means of doing it using a series expansion? Thanks Pratap, New Name.

 August 15, 2004, 13:52 Re: Gaussian-integrate. #4 Junseok Kim Guest   Posts: n/a I think you can integrate the area under a gaussian distribution by substitution and multiply twice. I saw this trick problem at some Calculus text book. Junseok

 August 15, 2004, 21:27 Re: Gaussian-integrate. #5 noName Guest   Posts: n/a Area under a gaussian is called an error function. Tabulated values are available anywhere. For a finite range of integration, use the sum/difference between two error function.

 August 16, 2004, 03:29 Re: Gaussian-integrate. #6 New Name. Guest   Posts: n/a When you say the sum/difference between two error functions, do you mean to use the Cumulative distribution function which is the area under the gaussian? This CDF contains the erro function. Thanks.

 August 16, 2004, 15:01 Re: Gaussian-integrate. #7 noName Guest   Posts: n/a Yes, thats what it is called when doing probability

 May 18, 2010, 02:45 cluster grids #8 New Member   vijay kadli Join Date: May 2010 Posts: 3 Rep Power: 9 hi m new to cfd can anyone explain me bout cluster grids???

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