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From: "Vladimir Bondarenko" <vb@cybertester.com>
Newsgroups: sci.math.symbolic,comp.soft-sys.math.maple,sci.math,fj.sci.math
Subject: Re: An exact 1-D integration challenge - 3
Date: 8 Feb 2005 11:49:38 -0800
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Xref: ccsf.homeunix.org fj.sci.math:1618

Yep.

The integral with exp(-z/2) poses no problem whatsoever
for a human or Maple/Mathematica :) as it obviously boils
down to the exponential integral.

> int((1-exp(-z))*exp(-z/2)/z, z);
-Ei(1,1/2*z)+Ei(1,3/2*z)
 
> int((1-exp(-z))*exp(-z/2)/z, z=0..infinity);
ln(3)


No challenge.