Question

Sendo f(X)=-3X +2 definida de R em R determine:
a) F(-1) b) F(1) c) F(0.3)

Answer 1

$a) \: f( - 1) = - 3 \times ( - 1) + 2 = 3 + 2 = 5 \\ \\ b) \: f(1) = - 3 \times 1 + 2 = - 3 + 2 = - 1 \\ \\ c) \: f(0.3) = - 3 \times (0.3) + 2 = - 0.9 + 2 = 1.1$