Separation of Variables Spherical Coordinates

cooev769
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Homework Statement



So I'm doing a question from one of my past exams as attached, there are no copy right issues with this document that I know of and have asked my lecturer who wrote the exam and he said I am welcome to upload it. The question is 1)b)iv), my attempt is attached. I end up with a 2l+1 where there should just be 1, can anybody tell me where I went wrong?

Homework Equations



Relevant equations are attached in the past exam

The Attempt at a Solution



My scan is too large to attach so please use the url provided. Thanks

http://tinypic.com/r/4ki9w5/8
 

Attachments

Physics news on Phys.org
Solved I was adding the two instead of subtracting them. I can do electrodynamics but I can't do simple addition. Time to go and cuff my primary school teacher.
 

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