In this thesis, we combine two methods which are called Sumudu transform and homotopy perturbation method to find the analytical/approximate solution of a class of discrete partial difference equation. Also, we compare our result with other existing methods. Type your Persian text in B Nazanin 13 font and your English text in Times new roman 11. Then, in the “Styles” window, click on “Text Styles” to adjust the text.
