i cant seem to get the hold of it.
Express the function in the form f g. (Use only elementary functions, but not the identity function, g(x) = x.)
F(x) = cot(√x)
f(x) = ?
g(x) = ?
f(x) = ?
g(x) = ?
You're close. If $\displaystyle f(x)=\cot(x)$ and $\displaystyle g(x)=\sqrt{x}$, then what's f(g(x))?
I think of it in terms of inner and outer functions. The inner one should be g(x) if you are supposed to write f(g(x)). You are plugging g(x) into f(x).