\begin{tabular}{|l|l|l|l||} 
\hline 
$x$    &  $\frac{f(x)-f(3)}{x-3} $ &         $x$ &  $\frac{f(x)-f(3)}{x-3} $ \\ \hline 
4      &                        16 &      3,0001 &                9,00060001 \\ \hline 
3,5    &                     12,25 &     3,00001 &              9,0000600001 \\ \hline 
3,1    &                      9,61 &    3,000001 &            9,000006000001 \\ \hline 
3,01   &                    9,0601 &   3,0000001 &          9,00000060000001 \\ \hline 
3,001  &                  9,006001 &  3,00000001 &                9,00000006 \\ \hline 
\end{tabular}