Services & ResourcesWolfram ForumsMathGroup Archive

[Date Index] [Thread Index] [Author Index]

Why does this happen?

• To: mathgroup at smc.vnet.net
• Subject: [mg78668] Why does this happen?
• From: Budaoy <yaomengliang at gmail.com>
• Date: Fri, 6 Jul 2007 03:31:37 -0400 (EDT)

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?

• Follow-Ups:
  • Re: Why does this happen?
    • From: Curtis Osterhoudt <cfo@lanl.gov>