If $f(x)=\left\{\begin{array}{lll}x & \text { if } & x<0 \\ 1 & \text { if } & x=0 \\ x^2 & \text { if } & x>0\end{array}\right.$. Then $\lim\limits_{x \rightarrow 0} f(x)$ is

0 1 2 does not exist

0

$\lim\limits_{x \rightarrow 0^{-}} f(x)=0$ and $\lim\limits_{X \rightarrow 0^{+}} f(x)=0$ Hence (1) is the correct answer.