Question

sendo f e g definidas respectivamente por f(x) -2x+1 e g(x) = 3x + 2 calcule F(1) + g(1) e f(-1)+g(-1)

Answer 1

$f(1) + g(1) = - 2 \times 1 + 1 + 3 \times 1 + 2 = \\ = - 2 + 1 + 3 + 2 = 4 \\ \\ f( - 1) + g( - 1) = - 2 \times ( - 1) + 1 + 3 \times ( - 1) + 2 = \\ = 2 + 1 - 3 + 2 = 2$

Answer 2

Respostas:

f(x) = - 2.x + 1 e g(x) = 3.x + 2

a) f(1) + g(1) = - 2.1 + 1 + 3.1 + 2 = - 2 + 1 + 3 + 2 = - 1 + 5 = 4

b) f( - 1) + g(- 1) = - 2.(- 1) + 1 + 3(- 1) + 2 = 2 + 1 - 3 + 2 = 3 - 1 = 2