## Calculus with Applications (10th Edition)

Reading the table, as $x$ approaches 1 from the left, $f(x)$ seems to approach 4, as $x$ approaches 1 from the right, $f(x)$ seems to approach 4. The one sided limits seem to exist and are equal, so we estimate that $\displaystyle \lim_{x\rightarrow 1}f(x)=4$