Hi! Freddie Witherden wrote: > Richard B. Kreckel wrote: >> Think about x<0. > > Ah, I forgot to mention where x>0 (positive real values of x). Look up 'possymbol' in the user manual. > Long day :) Short knight. :( -richy. -- Richard B. Kreckel <http://www.ginac.de/~kreckel/>