Question

Pfvr me ajudem!!!! É pra hoje....

Answer 1

Resposta:

Explicação passo a passo:

$f(x) = \frac{x+1}{2}$

a)

  $f(1) = \frac{1+1}{2} \\\\f(1) = \frac{2}{2} \\\\f(1)=1$                        $f(3) = \frac{3+1}{2} \\\\f(3) = \frac{4}{2} \\\\f(3)=2$

f(1) + f(3) = 1 + 2

f(1) + f(3) = 3

b)

$f(-1) = \frac{-1+1}{2} \\\\f(-1) = \frac{0}{2} \\\\f(-1)=0$                   $f(-3) = \frac{-3+1}{2} \\\\f(-3) = \frac{-2}{2} \\\\f(-3)=-1$

f(-1) + f(-3) = 0 + (-1)

f(-1) + f(-3) = -1