Here is another question that I got stuck with. Please see attachment. I typed the question in " Microsoft word" . If you can't load the attachment , please do let me know.

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- Dec 26th 2006, 08:43 AMJenny20proving the converse theorem
Here is another question that I got stuck with. Please see attachment. I typed the question in " Microsoft word" . If you can't load the attachment , please do let me know.

Thank you very much. - Dec 26th 2006, 08:55 AMThePerfectHacker
- Dec 26th 2006, 08:59 AMJenny20
Hi perfecthacker,

Thank you very much for your reply. I have never learnt Mobius inversion forumla. I will go through your prove. If I don't understand it, I will come back to you. - Dec 26th 2006, 09:49 AMJenny20
Hi perfecthacker,

Can you show me the other way ( not by mobius inversion forumla) to prove this question? I don't really get your prove because I dont' quite understand the mobius inversion formula. Thank you very much for your help. - Dec 26th 2006, 12:00 PMThePerfectHacker