\(\underrightarrow{x~\hbox{approaches 2 from the left}}\)
\(\underleftarrow{x~\hbox{approaches 2 from the right}}\)
\(x\)
\(1.9\)
\(1.99 \)
\(1.999\)
\(\rightarrow\)
2
\(\leftarrow \)
\(2.001\)
\(2.01\)
\(2.1\)
\(f(x)=x+3\)