Réponse :
bonjour
f(0) = 3x0 + 4=4
g(0) = 0-1=-1
h(0) = -5x0 + 7=7
k(0) = 1/5 x0 + 2=2
f(1) = 3x1 + 4=7
g(1) = 1-1=0
h(1) = -5x1 + 7=2
k(1) = 1/5 x 1+ 2=0,1
f(-2) = 3x-2 + 4=-2
g(-2) = 1-(-2) donc 1+2 =3
h(-2) = -5x-2 + 7=17
k(-2) = 1/5 x -2+ 2=1,6
f(0.5) = 3x0.5 + 4 =5,5
g(0.5) = 0.5-1=-0,5
h(0.5) = -5x0.5 + 7=4,5
k(0.5) = 1/5 x0.5 + 2=2,1