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## Homework Statement

Hi all, I'm new here, and just have a quick question:

Evalute: lim as x[tex]\rightarrow[/tex][tex]\infty[/tex] of [tex]\frac{x - sin x}{x^{3}}[/tex]

## Homework Equations

l'hopital's rule?

## The Attempt at a Solution

So far I've used L'hopital's rule to get it down to lim as x[tex]\rightarrow[/tex][tex]\infty[/tex] of [tex]\frac{cos x}{6}[/tex]

but after that, I don't know what to do... I'm pretty sure that I have to use an extention of L'hopital's rule

thanks!