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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?



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