Les fonctions2

[Blackaliens]

Bonjours est ce que vous pourriez vérifier ces exercies, c'est pour un devoir de math .... MErci

Soit les fonctions :

f(x) = (x²+4)+1
g(x) = racine(x)
h(x) = 1/x

ben les tableaux ne sont pas facile a représenter ... donc ... j'ai fais de mon mieu

Légende lol : croissante ! /\
décroissante V
moin l'infinit -~



Déterminer les variations dans [-4,4]

g º f

··················-4············0················4

······F······+~ V ········· 1 ········· /\ +~

·····G······+~ V ········· 1 ········· /\ +~

g º f·······+~ V ········· 1 ········· /\ +~





h º f



·················-4············0·············4

·····F·······+~ V···········1··········/\ +~

····H·······+~ /\··········1··········V +~

h º f·······+~ /\ ·········1··········V +~


Merci bcq