Re: Integration Limit

From: zaldy <zaldy_at_neutrino.kek.jp>
Date: Fri, 2 Sep 2005 21:36:49 +0900 (JST)

Hi,

 I been using the method
 TF1 * intg = new ...
 intg->Integral(a,b);

but unfortunately don't have an idea if this kind of integration limits [-infinity, infinity] are possible or implemented in root into some kind of a "TRICK" thing.

If they do, then I just wanted to know how to explicitly write them in the program;

But if they don't exist (I mean it's not possible) then maybe its VERY unfortunate; after all infinity means always infinity.....(:.

Although I think that a very very very large number can be interpreted as an infinity limit, but it is difficult to determine because infinity has no bound.

Zaldy N.

> zaldy wrote:
> > Hi,
> >
> > How do you write infinity if we integrate from -infinity to infinity in the
> > ff:
> >
> > TF1 * intg = new ...
> > intg->Integral(-infinity, infinity);
> > ^^^^^^^^^ ^^^^^^^^ Sorry just miss this thing (:.
> >
> > Thanks
> Hi,
> since ROOT does a numerical integration "-inf, +inf" limits
> dont make sense if you dont have an 2 * inf fast computer.
> Cheers
> Otto
>
>

-- 
Zaldy A. Nawang
Received on Fri Sep 02 2005 - 14:40:48 MEST

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