Question

Dadas as funçoes f(x)=2x+1 e g(x)=3x determine.
A) g0f(x)=
B)f(g(2)=
Alguem me ajuda pfv

Answer 1

Olá !

f(x) = 2x + 1

g(x) = 3x

a) g0f(x)
g(x) = 3x
g(2x + 1) = 3.(2x + 1)
g(2x + 1) = 6x + 3
------------.........-----------..............----

b) f(g(2))
g(x) = 3x
g(2) = 3.2
g(2) = 6

f(x) = 2x + 1
f(g(2)) = 2.6 + 1
f(g(2)) = 12 + 1
f(g(2)) = 13