Chapter 11.1, Problem 5E

(a)

To determine

To decide: Whether the limit $\underset{x\to 3}{\lim }f\left(x\right)$ exists or not; Estimate the value of $\underset{x\to 3}{\lim }f\left(x\right)$ if exists.

(b)

To determine

To decide: Whether the limit $\underset{x\to 0}{\lim }f\left(x\right)$ exists or not ;Estimate the value of $\underset{x\to 0}{\lim }f\left(x\right)$ if exists.