Question

Sendo f: IR → IR definida por f ( x ) = x 2 – 5x + 6, calcule:

a) f ( - 2 )

b) f ( - 1 )

c) f ( 0 )

d) f (
1/2)​

Answer 1

Resposta:

Explicação passo-a-passo:

f(-2)=(-2)²-5.(-2)+6=4+10+6=20

f(-1)=(-1)²-5.(-1)+6=1+5+6=12

f(0)=0²-5.0+6=0-0+6=6

f(1/2)=(1/2)²-5.1/2+6=1/4-5/2+6=1/4-10/4+24/4=-9/4+24/4=+15/4