Fonction carrée : f(x)=x²....Le nombre -3 a t il un antécédent par la fonction f? Justifier

By: USER2938
27 Agustus 2025 mathematiques 5 minutes
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Grade: Education Subject: mathematiques
Fonction carrée : f(x)=x²....Le nombre -3 a t il un antécédent par la fonction f? Justifier
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Bonjour,

Si -3 aurait un antécédent on aurait x² = -3

Or par définition x² > 0 > -3 → ce n'est donc pas possible

Answered on 27 Agustus 2025

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