Introduction - If you have any usage issues, please Google them yourself
Of [5,5] be equidistant Xi =-5+ih, h = 10/n, i = 0, 1, ..., a function of n, and Runge given y = 1/(1+x* x). As Lagrange interpolation, taking n = 10,20 calculate interpolation polynomial Pn (x) at x = error of 4.8, and the analysis.