Sagot :
Réponse :
a) g: x → -2,4x
Ainsi, g(9) = -2,4 x 9 = -21,6
b) · g(x) = -8 ⇔ -2,4x = -8 ⇔ x = 8/2,4 = 10/3
· g(x) = 2,88 ⇔ -2,4x = 2,88 ⇔ x = -1,2
· g(x) = -26,4 ⇔ x = -11
· g(x) = 252 ⇔ x = -105
Réponse :
a) g: x → -2,4x
Ainsi, g(9) = -2,4 x 9 = -21,6
b) · g(x) = -8 ⇔ -2,4x = -8 ⇔ x = 8/2,4 = 10/3
· g(x) = 2,88 ⇔ -2,4x = 2,88 ⇔ x = -1,2
· g(x) = -26,4 ⇔ x = -11
· g(x) = 252 ⇔ x = -105