Answer :
SOLUTION
The table for the finite difference for the data is shown below
From the table, the finite difference is calculated as
[tex]\begin{gathered} f_2-f_1 \\ e.g\text{ =19.68 - 17.91 = 1.77} \end{gathered}[/tex]That is the lower y-value minus the upper y-value, then you continue as follows.
