Evaluate the limit$,$ using L$\text{'}$H$$pital$\text{'}$s Rule if necessary. $($If the limit is inflinite, enter $"{}^{\text{'}}$ or $\text{'}-\text{'},$ as appropriate. If the limit does not otherwise exist, enter DNE.$)$

$\underset{x}{lim}\frac{ln(x)}{x^2}$