Question

Find f(x) and g(x) so the function can be expressed as y = f(g(x)).

Answer 1

$\bf \begin{cases} f(x)=\cfrac{8}{x}+4\\\\ g(x)=x^2 \end{cases}\qquad f(\ g(x)\ )=\cfrac{8}{\underline{g(x)}}+4\implies f(\ g(x)\ )=\cfrac{8}{\underline{x^2}}+4$