Let's take the limit n→∞lim(−n1) Let's divide numerator and denominator by n: n→∞lim(−n1) = n→∞lim(1(−1)n1) Do Replacement u=n1 then n→∞lim(1(−1)n1)=u→0+lim(−u) = −0=0
The final answer: n→∞lim(−n1)=0
Lopital's rule
There is no sense to apply Lopital's rule to this function since there is no indeterminateness of 0/0 or oo/oo type