Answer
see the details below
Work Step by Step
a function $f(x)$ is continuous at $x=a$ ($a$ in the domain of $f$) if the following conditions hold:
i) $f(a)$ is defined.
ii) $\lim\limits_{x \to a}f(x)$ exists.
ii) $f(a)=\lim\limits_{x \to a}f(x)$.
