%0 Journal Article
%T Difference and Difference Quotient. Part IV
%A Xiquan Liang
%A Ling Tang
%A Xichun Jiang
%J Formalized Mathematics
%@ 1898-9934
%D 2011
%I 
%R 10.2478/v10037-011-0006-5
%X In this article, we give some important theorems of forward difference, backward difference, central difference and difference quotient and forward difference, backward difference, central difference and difference quotient formulas of some special functions.
%U http://versita.metapress.com/content/k67m6552063u7354/?p=25816f9e6d274cf5ab90abc2a2c39abd&pi=5