Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site oddjob.UUCP Path: utzoo!linus!philabs!cmcl2!seismo!harvard!talcott!panda!genrad!decvax!harpo!whuxlm!whuxl!houxm!mhuxt!mhuxr!mhuxn!ihnp4!gargoyle!oddjob!matt 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