🚀 go-pugleaf

> > (c1) integrate( exp(-t)/(1+t), t, 0, infinity );
> > INTEGRAL IS DIVERGENT
> > 
> > /* This is wrong.  Have I input the problem incorrectly ? */
> > /* Also, after 10 minutes on the following problem. */
> > 
> > (c2) integrate( exp(-t)/(1+t^(3/2)), t, 0, infinity );
> > NAME STACK OVERFLOW
> > 
> > /* Am using the latest version on a VAX running Berkely UNIX BSD 4.2 */
> 
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Date: Tue, 20 Aug 85 14:43:09 PDT
From: fateman%ucbdali@Berkeley (Richard Fateman)
Message-Id: <8508202143.AA01115@ucbdali.ARPA>
To: caviness@UDel-Dewey.ARPA
Subject: Macsyma bugs?
Cc: lseward@rand-unix.ARPA

I got the same answers on a sun 2/50.  It took only 35% longer to compute
I think Monagan's problem was that he used "infinity", not "inf".
"infinity" is complex infinity, not real positive infinity.
If you want a simple bug, try  Int[1/x^2,{x,-1,1}] in SMP.  you get -2.
Note the integrand is non-negative. The integral is divergent, as Macsyma
is able to figure out.
  It seems to me that this is not the right place for bug reports,
though.  macsyma bugs can be mailed to macsym@mit-mc.arpa. Dunno
about SMP, though.