Magic machine for calculus

an update of my old file for function machine (http://dmentrard.free.fr/GEOGEBRA/index.htm)
[url=http://dmentrard.free.fr/GEOGEBRA/index.htm]http://dmentrard.free.fr/GEOGEBRA/index.htm[/url]
– Daniel Mentrard

Information: Magic machine for calculus