\(\underrightarrow{x~\hbox{approaches –1 from the left}}\) \(\underleftarrow{x~\hbox{approaches –1 from the right}}\)
\(x\) \(-1.1\) \(-1.01\) \(-1.001\) \(\rightarrow \) \(-1\) \(\leftarrow \) \(-0.999\) \(-0.99\) \(-0.9\)
\(f(x)=x^{2}-2\)