bonjour
niveau collège plutôt ....
f (x) = 2 x - 1
f ( 2) = 4 - 1 = 3
fais f ( - 3 )
h ( x) = 3 x - 4
3 x - 4 = 5
3 x = 5 + 4 = 9
x = 3
h ( 3 ) = 5
g (x) = 2 x ^3 + x + 2
g ( - 1 ) = - 2 - 1 + 2 = - 1
g ( 0 )= 2
g ( 1 ) = 2 + 1 + 2 = 5
