Question

Dadas as funções f(x)=2x+3 e g(x)= -5x+10. Determine a função composta de: a) f(g(x))
b) g(f(x))

Answer 1

a)g(x) = -5x+10

f(x) = 2.(-5x+10)+3

f(x) = -10x + 20 + 3

f(x) = -10x + 23

b) f(x) = 2x+3

g(x) = - 5 .(2x+3) +10

g(x) = -10x - 15 + 10

g(x) = -10x - 5