Question

Sejam as funções F(x) = x² - 2x + 1 e G(x) = 2x + 1. Calcule:
a) F(g(1))
b) G(f(2))
c) F(f(1))

Answer 1

Letra a) 
G(1)= 2x + 1
G(1)= 2.1 + 1
G(1)= 3

F(g(1))
F(3)= 3² -2.3 + 1
F(3) = 9 – 6 + 1
F(3)= 4
F(g(1))= 4

Letra b)
F(2)= x² - 2x +1
F(2)= 2² - 2.2 + 1
F(2)= 1

G(x)= 2x + 1
G(1)= 2.1 +1
G(f(2))= 3

Letra c)
F(x)= x² -2x +1
F(1)= 1² -2.1 +1
F(1)= 0

F(x)= x² -2x +1
F(0)= 0² -2.0 +1
F(f(1))= 1