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