1. The problem statement, all variables and given/known data a) (1+i)-n as n→∞ b) n/(1+i)n as n→∞ 2. Relevant equations 3. The attempt at a solution My answers were divergent for both question because (1+i)n=sqrt(2)*en*pi*i/4, so when n→∞, the limit is varying on the circle with radius sqrt(2). But the solution said both of them equal to 0. How can I get that? Any help is appreciated.