Here's what commercial macsyma does...Robert Dodier wrote:
> hello,
>
> another data point -- running a recent cvs build / clisp 2.33.2,
> on fedora 1 linux, i don't get quotient by zero for these cases:
>
> (%i1) tlimit(atan(x)/(1/exp(1)-exp(-(1+x)^2)),x,inf,plus);
> (%o1) 0
%e*%pi/2
> (%i2) taylor(atan(x)/(1/exp(1)-exp(-(1+x)^2)),x,inf,1);
TAYLOR encountered an essential singularity in ...
> Is x positive or negative?
>
> p;
> (%o2)/T/ 0 + . . .
> (%i3) build_info();
>
> Maxima version: 5.9.1hack
> Maxima build date: 23:50 9/12/2005
> host type: i686-redhat-linux-gnu
> lisp-implementation-type: CLISP
> lisp-implementation-version: 2.33.2 (2004-06-02)
>
>
> for what it's worth,
> robert dodier
>
> _______________________________________________
> Maxima mailing list
> Maxima@math.utexas.edu
> http://www.math.utexas.edu/mailman/listinfo/maxima