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Mathematics, 05.02.2021 21:10 famouzgal

Bonjour, voilà la question: une boite sans couvercle de contenance 0,5L, a la forme d'un pavé droit de base carrée de coté x cm et de hauteur h cm. 1a- justifier que x^2*h=500 b- en déduire que l'aire extérieure de la boite (fond plus parois latérales) est, pour tout x € ]0;+infini[ : A(x)=x^2 + (2000/x) 2- trouver les dimensions de la boite pour lesquelles l'aire extérieure est minimale et préciser cette aire. si quelqu'un sais répondre à une de ces questions ça m'aidera beaucoup, merci d'avance!

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Bonjour, voilà la question: une boite sans couvercle de contenance 0,5L, a la forme d'un pavé droit...
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