How Can I Solve This Complex Math Problem?

[maria69]

(Moderator's note: thread moved from "General Math")

I really can't do this question . Can someone please help me?
Thank you
Maria
http://img528.imageshack.us/img528/9633/pdeq3.jpg

 

[torquil]

This seems like a "textbook-style" problem, and should probably therefore be in the homework section, even if it is not proper homework (at least this is what the moderators have said before).

Do you have a description of finite-difference methods in your textbook? It should explain how to define the discretized derivatives.

Torquil

 

[maria69]

Well yes i have that:
http://img38.imageshack.us/img38/1249/pdeqq.jpg

But what about the magnitude of the errors and the excel part question\\/