On Sep 13, 2010, at 5:24 AM, tuggi wrote:
hello, can i calculate a sum to infinity in R. i want to do something like this: \sum_{i=0}^\infty\frac{2^{-d-1}}{\Gamma(\frac{d-1}{2})}\left(\frac{\Gamma(2d-3)(2- d)_{i}\Gamma(i+1,-z/2)2^{i+1}}{\Gamma(d-1)(4-2d)_{i}i!}\right)+\\ \sum_{i=0}^\infty\frac{2^{-d-1}}{\Gamma(\frac{d-1}{2})}\left(\frac{\Gamma(3-2d) (d-1)_{i}\Gamma(2d-2+i,-z/2)2^{2d-2+i}}{\Gamma(2-d)(2d-2)_{i}}\right),where (a)_{i}=\Gamma(a+i) / \Gamma(a) . I hope someone can help me.
Are you aware of the RYacas interface to the symbolic algebra YACAS. (I'm not sure I have all the caps set correctly, but your search engine probably won't care.)
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