Réponses

2014-01-21T19:00:55+01:00
F(2) = 2a+b = 0
f(3) = 3a+b = 6

f(3)-f(2) = 6-0
3a+b - 2a-b = 6
a = 6
2*6+ b = 0
b = -12
d'où
f(x) = 6x-12