CPM Homework Help : PC Problem 5-100

Let $f(x) = \left\{ \begin{array} { l } { x ^ { 2 } - 3 \quad\text {for } x \leq 2 } \\ { 5 - x \quad\ \text { for } x > 2 } \end{array} \right.$ .

Find $\lim\limits _ { x \rightarrow 2 ^ { + } } f ( x )$
Hint (a):
As $x→2$ from the right (positive) side, what height does the graph approach?

Find $\lim\limits _ { x \rightarrow 2 ^ { - } } f ( x )$
Hint (b):
As $x→2$ from the left (negative) side, what height does the graph approach?

Find $\lim\limits _ { x \rightarrow 2 } f ( x )$ or explain why it does not exist.
Hint (c):
Are the limits from the left and right sides approaching the same value?