first fxx numerical approximation data 3, 2, 3, ,x(i),f(i) fit 'I' 'I' 'x',llx, 'f'I'

ABSTRACT

The data set used to illustrate subroutine direct is taken from Example 5.1. The output generated by the program is presented in Output 5.1.

Output 5.1. Solution by differentiation of a direct fit polynomial.