Sagot :
Bonjour,
f(x) = 2x²+x-3
donc :
- f(0) = 2(0²)+0-3 = 0+0-3 = -3
- f(4) = 2(4²)+4-3 = 32+4-3 = 33
- f(-3) = 2(-3)²+(-3)-3 = 18-3-3 = 12
Bonsoir,
f(x)= 2x²+x-3.
Calculer les images de 0; 4; -3 par f.
f(0)= 2(0)²+0-3= -3
f(4)= 2(4)²+4-3= 33
f(-3)= 2(-3)²+(-3)-3= 2(9)-3-3= 12