How Can I Solve This Complex Math Problem?

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(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
 
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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
 
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\\/
 
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Thread 'Finding the nth roots of a complex number'

There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
View full post »

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