Re: the error function

From: Max Leitner (nospam_at_nospam.com)
Date: 10/20/04 

Date: Wed, 20 Oct 2004 14:33:51 -0500

"G. A. Edgar" <edgar@math.ohio-state.edu.invalid> wrote in message
news:201020041440085891%edgar@math.ohio-state.edu.invalid...
> In article <2tnfc6F1uditpU1@uni-berlin.de>, El kroty <kroty@gawab.com>
> wrote:
>
> > Hi folks, I was looking for a primitive for e^(-t^2 + t) and
> > someone told me that it's "the error function" and doesn't
> > exist a primitive for that.
> > But I just can't understand why. It's a good function.
> > Any help would be appreciated. Thanks.
>
> Yes, exp(-t^2+t) is a continuous function, so it has a primitive.
> Proved by Cauchy, I guess.
> But this primitive is not an "elementary function" and
> that is what "someone" was telling you.
>
> --
> G. A. Edgar
http://www.math.ohio-state.edu/~edgar/

I like the error function because it is difficult to calculate on computer,
it tends to blowup in some areas.
Anyone know a nice stable way to calculate it? (not sterling's
approximation)

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