Question

3- Dada a função quadrática f(x) = -x² + 2x – 1, determine:
a) F(1)_____________________________________________________________________ _________________________________________________________________________
b) F(3)_____________________________________________________________________ _________________________________________________________________________

Answer 1

Resposta e explicação passo a passo:

a) f(1)

f(x) = -x² + 2x – 1

f(1) = -1² + 2.1 - 1

f(1) = 1 + 2 - 1

f(1) = 3 - 1

f(1) = 2

b) f(3)

f(x) = -x² + 2x – 1

f(3) = -3² + 2.3 - 1

f(3) = 9 + 6 - 1

f(3) = 15 - 1

f(3) = 14