Definite integration error in MMA 3.0
- To: mathgroup at smc.vnet.net
- Subject: [mg8831] Definite integration error in MMA 3.0
- From: luca ciotti <ciotti at boas5.bo.astro.it>
- Date: Mon, 29 Sep 1997 02:39:56 -0400
- Organization: Osservatorio Astronomico di Bologna
- Sender: owner-wri-mathgroup at wolfram.com
Hello,
I found a wrong result performing a symbolic definite integral with
MMA3.0 running under Linux.
A=Integrate[1/Sqrt[1+t+t^4], {t,0,Infinity}]
As espected A is expressed in terms of elliptic integrals, but
when evaluated
N[A,40]=-2.2405.......
that is obviously wrong.
NIntegrate produces A=1.66159.....
It is this a known problem?
ciotti luca
osservatorio astronomico di bologna
via zamboni 33
40126 bologna (italy)