definite integral bug (3.0)
- To: mathgroup@smc.vnet.net
- Subject: [mg12010] definite integral bug (3.0)
- From: Richard Easther <easther@het.brown.edu>
- Date: Fri, 17 Apr 1998 03:40:45 -0400
- Organization: High Energy Theory Group, Physics Dept, Brown University
Hi - I recently tried to persuade Mathematica to do the following
definite integral,
Integrate[ Exp[-x^2] 1/(1 + Exp[ x]),{x,0,Infinity}]
and it gives the answer
Log[x] 1 + Log[x]
PolyGamma[0, 1 + ------] - PolyGamma[0, ----------]
2 2
---------------------------------------------------
2
which depends on x, so presumably something is wrong here!
I am assuming this is a bug - has anyone else seen it? Does it show up
in later versions of the kernel than 3.0?
Richard