Evaluate the given limits using the graph of the function $f(x) = \displaystyle \frac{1}{(x - 2)^2}$ shown above.

1. $\displaystyle \lim_{x \to 2^-} f(x)$ =
2. $\displaystyle \lim_{x \to 2^+} f(x)$ =
3. $\displaystyle \lim_{x \to 2} f(x)$ =

limit