, André, Jacques, Valérie2024-09-042024-09-042004-12-01Teaching Mathematics and Computer Science, Vol. 2 No. 2 (2004) , 319-3351589-7389https://hdl.handle.net/2437/379538In this paper, we explain how a computer works when "zooms" are made around a point on a planar curve. This modelisation leads to an easy and algorithmic method to find the (vertical or not vertical) tangents for the studied curve.application/pdfZoommicroscope virtueltangentepoint de non dérivabilitélimite de courbesconvergence uniformedidactique des mathématiquesfolyóiratcikkOpen AccessAndré Antibi, Jacques Bair et Valérie Henryhttps://doi.org/10.5485/TMCS.2004.0063Teaching Mathematics and Computer Science22Teach. Math. Comp. Sci.2676-8364