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Soit f:R2R une fonction drivable telleque f(1,2)= 4, et f(1,2)=(3,2). Soit maintenant la fonction h(x,y)= f(3xy2,x+y). Calculez la direction selon laquelle la fonction h aletaux
Soit f:R2R une fonction drivable telleque f(1,2)= 4, et f(1,2)=(3,2). Soit maintenant la fonction h(x,y)= f(3xy2,x+y). Calculez la direction selon laquelle la fonction h aletaux de variation leplus grand au point(1,1), et calculez ce taux de variation maximal.
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