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

Question

y = eight divided by x squared + 2

Answer 1

if y = 8/(x^2+2)

Then one choice is clearly

f(x) = 8/x
g(x) = x^2+2

If y = 8/x^2 + 2, then we have

f(x) = x+2
g(x) = 8/x^2