[tex]

\displaystyle \lim_{x \to + \infty} \left( 1 + \frac {3}{x} \right)^{x/2} =

[/tex]

I am simply stumped with this problem.

All I can say, is there is almost an e in there.

This needs to be somehow factored out correct?

Can someone please guide me through this?

Much appreciated.