Content License: Creative Commons Attribution Non Commercial Share Alike 4.0 International (CC-BY-NC-SA-4.0)Credit must be given to the creatorOnly noncommercial uses of the work are permittedAdaptations must be shared under the same termsDownloadsCours 4.0Contenu pédagogique en accès libreEdgar P. BurkhartLycée du Pays de Soule