Sagot :
Réponse :
bonsoir
h (x) = x - 5 x = erronée
g (x) = - 3 x + 1
g ( 7 ) = - 21 + 1 = - 20
g (0) = 1
g ( - 7 ) = 21 + 1 = 22
Explications étape par étape :
Réponse:
BONSOIR,
1-a- on a h(-3) = -5 × (-3) = 15
on a h(2,5) = -5 × 2,5 = -12,5
-b- on a h(-1) = -5 × (-1) = 5
on a h(0,5) = -5 × 0,5 = -2,5
-c- on a h(x) = 55
-5x = 55
x = 55\-5
x = -11
alors h(-11) = 55
2-a- on a g(7) = -3 × 7 + 1
= -21 + 1
= -20
-b- on a g(0) = -3 × 0 + 1
= 0 + 1
= 1
on a g(-7) = -3 × (-7) + 1
= 21 + 1
= 22