Demonstrate that

I am not a mathematician so sorry if this is not very challenging. Basically I just found this identity to be interesting and wonder how obvious/obscure it is to real mathematicians.

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- Nov 27th 2009, 12:47 PMraineri identity
Demonstrate that

I am not a mathematician so sorry if this is not very challenging. Basically I just found this identity to be interesting and wonder how obvious/obscure it is to real mathematicians. - Nov 27th 2009, 01:11 PMgalactus
Note that

Therefore, we have

Now, show this equals - Nov 28th 2009, 12:28 PMrainer