Re: Why does this happen?
- To: mathgroup at smc.vnet.net
- Subject: [mg78714] Re: Why does this happen?
- From: David Reiss <dbreiss at gmail.com>
- Date: Sat, 7 Jul 2007 06:10:01 -0400 (EDT)
- References: <f6ks38$lbm$1@smc.vnet.net>
Oops, my bad. I see that there was only a typo in your expression:
the Exp should have had a - sign in its argument:
Integrate[Log[1+Exp[-x]/Sqrt[x]],{x,0,Infinity}]
On Jul 6, 3:47 am, Budaoy <yaomengli... at gmail.com> wrote:
> I have a problem in calculating this integral shown below:
>
> Integrate[Log[1+Exp[x]/Sqrt[x]],{x,0,Infinity}]
> Pi^2/6
>
> N[%]
> 1.64493
>
> NIntegrate[Log[1+Exp[x]/Sqrt[x]],{x,0,Infinity}]
> 1.01799
>
> Where does this difference come from and which one is correct?