Question

How do I find f(x) and g(x) so the function can be expressed as y = f(g(x))?

y = 8/(x^2) +4

Answer 1

there are a few ways this can be approached

Answer 2

one way is to replace the "x" term with g(x)

f(x) = g(x) + 4

then define g(x) by what was replaced

Answer 3

@amistre64 what if \[f(x)=\frac{ 8 }{ (g(x))^{2} }+4\]

Answer 4

There are a few ways to approach this like @amistre64 said.