$(1$ point$)$

Evaluate the following $limitby$ first recognizing the sum $as$ a Riemann sum for a function defined $on0,1$ :

$\underset{n}{lim}\frac{8}{n}(\sqrt[\phantom{2}]{\frac{1}{n}}+\sqrt[\phantom{2}]{\frac{2}{n}}+\sqrt[\phantom{2}]{\frac{3}{n}}+$cdots$+\sqrt[\phantom{2}]{\frac{n}{n}})$