Hi!

$\displaystyle \mbox{Show that} \ lim_{x \rightarrow 3} \ \ x^2 \ = 9 $

Please help me through this.

For every $\displaystyle \epsilon > 0 \ \mbox{there is a } \delta >0 $ $\displaystyle \mbox{such that} \ \mid f(x) - A \mid < \epsilon \ \ \ $ $\displaystyle \ \ \ \ \Rightarrow \mid x - a \mid < \delta $

This is delta-epsilon definition, right?

How should I start?

Thanks!