Question

Dadas as funções f(x)= x²-1 e g(x)= 2x, calcule.

a) f(g(x)


b)g(f(x)

c)f(g(2)

d)g(f(2)​

Answer 1

a) f(g(x) = g² -1= 4x² - 1

b)g(f(x) = 2f= 2(x²-1)

c)f(g(2)= 4.2² -1 = 15

d)g(f(2) = 2(2² -1)= 6