Comments:ZoomIn Command
From GeoGebra Manual
Revision as of 12:05, 4 May 2011 by Birgit Lachner (talk | contribs)
Idea of Use
Linear aproximation of a function by its tangent
Create a function with a point A on it and a button with the code
ZoomIn[A,2]
to see that the function looks equal to the tangent for a big "magnification". Another button to Zoom Out let you be able to prove this at other positions of the point A.