Question

Função composta F(x)= -x+2, H(x)= 2×+5.

H(f (5))=

Answer 1

1) Calcular F(5):

F(x) = - x + 2

F(5) = - 5 + 2

F(5) = - 3

2) Calcular H(F(5)):

H(x) = 2x + 5

H(f(5)) = H(- 3)

H(- 3) = 2.(-3) + 5

H(- 3) = - 6 + 5

H(- 3) = - 1

Resposta: - 1