Re: Integrate returns 0
- To: mathgroup at smc.vnet.net
- Subject: [mg23935] Re: Integrate returns 0
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Fri, 16 Jun 2000 00:57:18 -0400 (EDT)
- Organization: Universitaet Leipzig
- References: <8i9pj8$2hq@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi,
a bug the integral is never zero.
Regards
Jens
"Felix E. Klee" wrote:
>
> Hi,
>
> when I define the function
> f[x_,n_]:=D[Exp[-x^2],{x,n}]^2
> and execute
> Integrate[f[x,n],{x,-Infinity,Infinity}]
> the result is
> 0
>
> However this is not correct for all parameters n since
> Integrate[f[x,1],{x,-Infinity,Infinity}]
> returns
> Sqrt[Pi/2]
>
> Is this a bug in Mathematica or am I doing something wrong?
>
> TIA,
>
> Felix