The role of derivatives for a function

http://dmentrard.free.fr/GEOGEBRA/Maths/geogebrclassic/funcderiv2MD.html
[url=http://dmentrard.free.fr/GEOGEBRA/Maths/geogebrclassic/funcderiv2MD.html]http://dmentrard.free.fr/GEOGEBRA/Maths/geogebrclassic/funcderiv2MD.html[/url]
– Daniel Mentrard

Information: The role of derivatives for a function