(*						      *)
(* Numerical Mathematics and Computing, Fifth Edition *)
(* Ward Cheney & David Kincaid		              *)
(* Brooks/Cole Publ. Co.			      *)
(* (c) 2003                                           *)
(* No warranties implied or expressed.	              *)
(* File: newt_interp2				      *)

(* Newton interpolation polynomial *)

InterpolatingPolynomial[{{1,3}, {3/2,13/4},
                         {0,3}, {2,5/3}}, x]
Simplify[%]
%% /. x -> 1/2