Variations avec logarithme 2

Calculer la dérivée puis construire le tableau de variations de la fonction f définie sur ];[ par

.
f'(x) =
x
f'(x) transparent transparent 0 transparent transparent
f(x) transparent transparent transparent transparent

Donner soit les valeurs exactes, soit des valeurs approchées en gardant au moins 5 chiffres significatifs.


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 =
 =
 =
transparent transparent transparent transparent transparent transparent transparent transparent transparent transparent

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