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This is to do with my research. While deriving some theory, I got an equation as follows.

[tex]\lim_{n\rightarrow\infty}\sum_{i=1}^n\frac{R^2}{R^2+(4a\,i-2\,k)^2-(4a\,i-2\,k)\,\sin(\gamma)}[/tex]

Never mind what [tex]R, a, k,[/tex] and [tex]\gamma[/tex] are. They are all constants.

What I would like to do is to get a neat integral for this expression. So I would really appreciate if someone could let me know if doing this is even possible or not. The presence of the limit and the summation together tells me that there must be an integral solution.

I found a link where they deal with this stuff, but there, only a particular class of functions are dealt with (without saying so). Here is the URL,

http://johnmayhk.wordpress.com/2007/09/24/alpm-sum-an-infinite-series-by-definite-integrals/

Can something similar be worked out for this problem? If not is there any other general method to do this stuff. I don't expect a complete solution, but a small hint will work wonders.

Thanks.

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# Express summation at integral

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