bjr
f(x) = (4x + 2)/(1 + x²)
on demande de calculer f(2)
on remplace x par 2
f(2) = (4*2 + 2)/(1 + 2²)
f(2) = (8 + 2)/ (1 + 4)
f(2) = 10/5
f(2) = 2 (km)
