I(POWER)MAC Eigenmath is what Apple's Grapher should be, at least in my wishes. (Version 136)
MAGOSILVAN Is it possible to have a little user manual, or at least some sample? (Version 132)
MORJOVY +1 (Version 133)
TOMAX there's a very good manual and examples on the dev's web site! he also supplies source for all the functions - thanks! (Version 136)
IZAC Pretty cool. Very impressed with the integration and differentiation features. (Version 112)