Extended real arithmetic (was Re: inf - inf = 0 ??)



Especially disappointing because extended real arithmetic can in fact solve
this correctly:

   p1: sqrt(x+1)-sqrt(x)$
   p2: cos(x)$

limit(p1,x,inf) => 0
limit(p2,x,inf) => IND

from which Maxima should be able using extended real arithmetic that
limit(p1*p2) => 0

On Fri, Sep 10, 2010 at 08:52, Barton Willis <willisb at unk.edu> wrote:

> (((sqrt(x+1)-sqrt(x)))*cos(x),x,inf);
>