Discuss the continuity of the function f defined by
`f(x)={(x+2,"if",x lt 1),(x-2,"if",x gt 1):}`

Explanation

To discuss the continuity of the function \( f \) defined by:

\[
f(x) =
\begin{cases}
x + 2 & \text{if } x < 1 \\
x - 2 & \text{if } x > 1
\end{cases}
...