Hi!

I need some help to get me started on these $\displaystyle \lim_{x\rightarrow 0}$ expressions.

I just want to learn the mindset behind solving these, so I can try to solve a few on my own.

$\displaystyle \lim_{x\rightarrow 0} \ \frac{sin 3x}{3x} $

I want to decide the limit when $\displaystyle x\rightarrow \ 0 $

Thank you