Question

sendo f(x)=x2-2x+1 determine a) f(x)=0 b) f(-1) c) f(3)=2x​

Answer 1

Resposta:

A)

$f(0) = 0 \times 2 - 2 \times 0 + 1 \\ f(0) = 1$

B)

$f( - 1) = ( - 1) \times 2 - 2 \times ( - 1) + 1 \\ f( - 1) = 1$

C)

$f(3) = 3 \times 2 - 2 \times 3 + 1 \\ f(3) = 1 \\ \\ mas \: f(3) = 2x \\ nesse \: caso \\ f(3) = 2 \times 1 \\ = 2$