# Exercise Solution 9.7

First, we construct from by setting = and interpolating a function of form [9.62] between , and to obtain , , … , . The interpolation is performed as described in Section 2.4.3. See spreadsheet. Interpolation function [9.62] becomes

[s1]

from which we obtain

[s2]

Substituting [9.64] and [s2] into [9.63] yields

[s3]