On 4/30/07, Ed <erom at earthlink.net> wrote: > (%i360) numer:true; > (%o360) true > > Now > > (%i361) %%c; > (%o361) (299792458*m)/s Sometimes it is more convenient to enter <some expression>, numer; which has the effect of numer:true but just while <some expression> is evaluated. E.g. %%c^2, numer; => 89875517873681764*m^2/s^2 HTH Robert Dodier