Exercice 5 (Logique, ensembles, raisonnements) [00112] (video)

Exo7. Exercices de mathématiques pour les étudiants.
Retrouvez la correction écrite sur http://exo7.emath.fr

Phrase logique, "pour tout", "il existe", négation.
Bonus (à 3'09'') : "P implique Q", implication, négation.


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