Partial boundry question

1. Dec 8, 2008

transgalactic

find
lim sup Xn
and
lim inf Xn
of
Xn=(n)^((-1)^n)

??

2. Dec 8, 2008

mutton

Partial boundary?

Write out some terms to try to get to the limits, or at least to understand $$\{x_n\}$$.