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If sum(r=1)^(oo)((2r-1))/((r^(2)+1)(r^(2...

If `sum_(r=1)^(oo)((2r-1))/((r^(2)+1)(r^(2)-2r+2))=(a)/(b)` (where `a & b` are co-prime, `n>=2`), then a and b will be

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