Question

Dada as funções f(x)=5x e g(x)=3x + 2,calcule: a)f(g(3)) b)g(f(-1)) c)f(g(0)) + g(f(1))

Answer 1

Resposta:

$a)f(g(3)) = f(3 \times 3 + 2) = f(11) = \\ 11 \times 5 = 55 \\ b)g(f( - 1)) = g( - 5) = - 15 + 2 = - 13 \\ c)f(g(0)) = f(2) = 10 \\ \: \: \: g(f(1)) = g(5) = 15 + 2 = 17 \\ 10 + 17 = 27$