03efd1754e905a1724cd
$a \in \R$
$b_n = \frac{n^2 + 5}{2n^2 - 3} \cdot (\color{red}{n}\mod2)$
$;
f:A \rarr \R \nbsp
A \subset \R \nbsp
p \in \R \nbsp g \in \R \nbsp
;$
$f$ ma granice w $g$ gdy:
$;
\nbsp \A \epsilon > 0
\nbsp \E \delta > 0
\nbsp \A x \in A
\nbsp \
\nbsp \
0 < |x-p| < \epsilon \Rarr |f(x) - g| < \epsilon
\nbsp \
;$