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Old   August 15, 2004, 06:10
Default Gaussian-integrate.
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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.
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Old   August 15, 2004, 06:56
Default Re: Gaussian-integrate.
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Pratap
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do it numerically. Pratap
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Old   August 15, 2004, 13:15
Default Re: Gaussian-integrate.
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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,

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Old   August 15, 2004, 13:52
Default Re: Gaussian-integrate.
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Junseok Kim
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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
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Old   August 15, 2004, 21:27
Default Re: Gaussian-integrate.
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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.
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Old   August 16, 2004, 03:29
Default Re: Gaussian-integrate.
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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.
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Old   August 16, 2004, 15:01
Default Re: Gaussian-integrate.
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noName
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Yes, thats what it is called when doing probability
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Old   May 18, 2010, 02:45
Default cluster grids
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vijay kadli
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hi m new to cfd can anyone explain me bout cluster grids???
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