>
> Message: 5
> Date: Thu, 15 Sep 2011 11:57:01 -0700
> From: Richard Fateman <fateman at eecs.berkeley.edu>
> To: Maxima - list <Maxima at math.utexas.edu>
> Subject: inf and minf
> Message-ID: <4E724A7D.7080802 at eecs.berkeley.edu>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Do we need minf? ? (negative real infinity)
>
> Note that - minf is currently not simplified to inf.
>
> RJF
Is there a pressing need to remove this? It seems like it would break
a lot of existing code (or at least cause annoyance for anyone using
Maxima for improper integrals). Maybe there is some fairly
substantial savings in time or memory?
I have to admit that this was confusing to me at first, but I'm now used to it.
The following does work.
(%i9) integrate(1/x^2,x,minf,-1);
(%o9) 1
(%i10) integrate(1/x^2,x,-inf,-1);
(%o10) 1
(%i11) integrate(1/x^2,x,1,inf);
(%o11) 1
(%i12) integrate(1/x^2,x,1,-minf);
(%o12) 1
So maybe it wouldn't be a huge change. ? Just let us know so we
could modify Sage's use of Maxima accordingly.