bonjour
f (x) = 3 x + 2
f (1) = 3 + 2 = 5
f (0) = 2
f (2) = 6 + 2 = 8
f (x) = 8
3 x + 2 = 8
3 x = 6
x = 2
g (x) = x²
g ( 1) = 1
g ( 0) = 0
g ( 2) = 4
x² = 16
x = √16 ou - √16
x = 4 ou ( - 4)
h (x) = 1 / ( x - 4 )
h ( 1 ) = 1 ( 1 - 4 ) = - 1 /3
h ( 0) = - 1/4
h (2) = 1 / ( 2 - 4) = - 1 /2
h ( 5) = 1 / ( 5 - 4) = 1/1 = 1
