one integral - three (different) answers
- To: mathgroup at yoda.physics.unc.edu
- Subject: one integral - three (different) answers
- From: Michael.Trott at physik.tu-ilmenau.de
- Date: Thu, 4 Feb 1993 18:59:02 +0000
Hi,
the following is a little bit disturbing
Integrate[1/((a-x)(x-b)),{x,-Infinity,c}]
or
Integrate[-1/((x-a)(x-b)),{x,-Infinity,c}]
or
((#/.x->-Infinity) - (#/.x->c))&[Integrate[1/((a-x)(x-b)),x]]
gives three different answers.
Let c<a<b for convenience, so the independence of the two
definite integrals from c is surprisingly.
Whats going on?
Michael Trott
trott at physik.tu-ilmenau.de