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From: matt@oddjob.UUCP (Matt Crawford)
Newsgroups: net.math.symbolic
Subject: Re: Bug in Macsyma's definite integration ?
Message-ID: <932@oddjob.UUCP>
Date: Mon, 19-Aug-85 18:06:23 EDT
Article-I.D.: oddjob.932
Posted: Mon Aug 19 18:06:23 1985
Date-Received: Fri, 23-Aug-85 07:09:17 EDT
References: <256@watmum.UUCP>
Reply-To: matt@oddjob.UUCP (Matt Crawford)
Organization: U. Chicago, Astronomy & Astrophysics
Lines: 13

In article <256@watmum.UUCP> mbmonagan@watmum.UUCP (Michael B. Monagan) writes:
>(c1) integrate( exp(-t)/(1+t), t, 0, infinity );
>INTEGRAL IS DIVERGENT
>
>/* This is wrong.  Have I input the problem incorrectly ? */

The word "infinity" denotes a complex infinity of arbitrary
phase.  Use "inf" for positive real infinity.  (Although
macsyma still can't solve the integral analytically, it won't
claim that it is divergent.)
_____________________________________________________
Matt		University	crawford@anl-mcs.arpa
Crawford	of Chicago	ihnp4!oddjob!matt