Re: Limit bug in Calculus\Limit ???

*To*: mathgroup at smc.vnet.net*Subject*: [mg8543] Re: [mg8488] Limit bug in Calculus\Limit ???*From*: Robert Pratt <rpratt at math.unc.edu>*Date*: Sat, 6 Sep 1997 23:16:11 -0400*Sender*: owner-wri-mathgroup at wolfram.com

The (two-sided) limit is not defined. The (one-sided) limit IS defined as y approaches 0 from the right (i.e. y>0), and this limit is infinity. Also, the (one-sided) limit IS defined as y approaches 0 from the left (i.e. y<0), and this limit is 0. Since the one-sided limits don't agree, the two-sided limit does not exist. Rob Pratt Department of Mathematics The University of North Carolina at Chapel Hill CB# 3250, 331 Phillips Hall Chapel Hill, NC 27599-3250 rpratt at math.unc.edu http://www.math.unc.edu/Grads/rpratt/ On Tue, 2 Sep 1997, Lars A. Stole wrote: > I am using Mma 3.0 on a NextStep 3.3 PentiumPro Intel machine; I > have also successfully reproduced the problem on a Sparc running Mma > 3.0. > > The following command > > Limit[E^(2/y),y->0] > > returns the correct answer "infinity" when the Calculus`Limit` > package IS NOT loaded. When the Limit package IS_loaded (which I had > thought meant even more functionality), I incorrectly obtain "0" as > the answer. > > Why is the Limit.m generating an incorrect answer? Is this a known > bug? And if so, is there a list of known bugs that a user can > access? > > Thanks. > >