Question

Dada a função quadratica f R definida por f(x)=-4x²-4x-1 determine f(-1),f(1/2) e f(2)

Answer 1

Explicação passo-a-passo:

f(x)=-4x²-4x-1

f(-1)=-4.(-1)²-4.(-1)-1

f(-1)=-4.(1)+4-1

f(-1)=-4+3

f(-1)=-1

****

f(1/2) =-4.(1/2)²-4.(1/2)-1

f(1/2)=-4.(1/4)-2-1

f(1/2)=-1-3

f(1/2)=-4

****

f(2) = -4.(2)-4.(2)-1

f(2)=-8-8-1

f(2)=-16-1

f(2)=-17