Q$3.(24$ points$)$

a$.$ Show that $3n^2+4n$ is $O(n^2)$ by applying the definition of Big$-$Oh$.$

b$.$ Show that $nlogn+17$ is $(n)$ by applying the definition of Big$-$Omega.

b$.$ Show that $n^2+4n$ is $(n^2)$ by applying the definition of Big$-$Theta.