Comment on fait le tableau de signe d'une fonction polynôme du 3ème degrés?? J'en ai besoin pour 5x^3+4x^2-2500

By: USER5363
27 Agustus 2025 mathematiques 5 minutes
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Grade: Education Subject: mathematiques
Comment on fait le tableau de signe d'une fonction polynôme du 3ème degrés?? J'en ai besoin pour 5x^3+4x^2-2500
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Je pense que c'est ta fonction est toujours négative. Si tu dérives tu as: f'(x)=15x^2+8x Tu étudies la variation de f, et tu remarques que f admet un maximum, -2500, atteint pour x=0. Donc pour tout x: f(x)<-2500, f(x) est négatif. Mais à vérifier.
Answered on 27 Agustus 2025

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