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From: alain7@free.invalid (Alice)
Newsgroups: fr.sci.maths
Subject: Re: La courbe du jour
Date: Sun, 30 Mar 2025 09:53:03 +0200
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Richard Hachel <r.hachel@tiscali.fr> wrote:

> > Un repère d'Argand ou tout autre repère cartésien est-il forcément
> > orthogonal ? Je dirais que non.
> 
> Admettons.

Il n'y a rien à admettre : c'est oui ou c'est non.

> Mais c'était pas la question.

Ce n'est pas toi que j'interrogeais.