Réponse :
bonsoir
f (x) = 2 x - 3
f (0) = - 3
f ( - 2 ) = - 4 - 3 = - 7
f ( 1/2 ) = 1 - 3 = - 2
2 x - 3 = 5
2 x = 8
x = 4
2 x - 3 = - 4
2 x = - 1
x = - 1/2
E (2) = 4 - 3 = 1
2 x - 3 = - 5
2 x = - 2
x = - 1
f ( 2 ; - 1 )
M (√3) = 2 √3 - 3
2 x - 3 = - 3/4
8 x /4 - 12/4 = - 3/4
8 x = - 3 + 12
8 x = 9
x = 9/8
Explications étape par étape :