C2_2	Demo : Error Analysis of Lagrange Interpolation 
 W2_5A	Demo : Interpolating Cubic Splines, The impact of boundry values
 W2_5B	Demo : Interpolating Cubic Splines, The impact of boundry values g0 an g1
 W2_1	Demo : Plot Chebychev Polynomials
 W2_4	Demo : Comparison of Splines and Interpolating Polynomials 
 G = LAGRANGE(Xd,FX,X)		Langrange Interpolation Polynomial
 W2_2	Demo : Newton Interpolation Polynomial and Error Analysis
 Y = NEWTON(XD,FX,M,N,X)	Newton Forward Interpolation