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