Question

AO CONSIDERARMOS AS FUNCOES F(X)=4X E G(X)=X ELEVADO A DOIS+5, DETERMINE: G(F(X))=?

Answer 1

f(x)= 4x
g(x)= x²+5

(g o f)(x) = g(f(x))

g(x) = x² + 5
g(4x) = (4x)² + 5
g(4x) = 16x² + 5

(g o f)(x) = g(f(x)) = 16x² + 5