Order of $f(n) = 4n + 6n^3 - 8n^5$ If a function $$f(n) = 4n + 6n^3 - 8n^5$$ then the order of $f$ is:
The answer I have is $\log(n)$, but I'm not sure if it's right.

The order of a polynomial is usually its largest power. In this case, it would be 5.
If instead you are trying to find $g$ s.t.
$$
f\in O\left(g\right)\text{ as }n\rightarrow\infty,
$$
(big O notation) then $g$ can be $n^{5}$.
