15 points
2 answers:
You might be interested in
Substituting <em>x</em> = 0 directly gives the indeterminate form 0/0, so you can use l'Hopital's rule (and you'll have to do that twice):
The limand is continuous everywhere, so you can plug in <em>x</em> = 0 to get 36•1/2 = 18.