-----maxima-bounces at math.utexas.edu wrote: -----
>(%i1) trigsimp(0);
>(%o1) 0
>
>(%i2) kill(allbut [functions]);
>(%o0) done
>
>(%i1) trigsimp(0);
>trigrule1 not found#0: trigsimp(x=0)
>(trgsmp.mac line 71) -- an error.
I believe that this is a bug; you should file a bug report. Here is a
workaround:
(%i1) trigsimp(0);
(%o1) 0
(%i2) kill(allbut [rules]); <--- not [functions]
(%o0) done
(%i1) trigsimp(0);
(%o1) 0
Barton