Réponse :
Explications étape par étape :
f(x) =3/5x
1. f(5) = (3/5)* 5 = 15/5 = 3
f(−5) = (3/5)* -5 = 15/-5 = - 3
2. f(x) = 6
3/5x = 6 x = (6*5)/3 = 30/3 = 10 donc f(10) = 6
3. g(x) = 2x + 1
g(4) − g(3) = 9 - 7 = 2
g(1) = 2*1 + 1 = 2 + 1 = 3
donc g(x) = 2x + 1
4. g(-1) = 2 * (-1) + 1
= -2 + 1
= -1
le point E(−1; −1) appartient au ∁g
