Calculus (3rd Edition)

$$\lim _{x \rightarrow 0.5} f(x)=1.5.$$
According to the figure, we note that when x approaches 0.5 from the left or from the right, then f(x) approaches $1.5$. Hence, we have $$\lim _{x \rightarrow 0.5} f(x)=1.5.$$