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[Post New]6 Apr 2008 19:20:37 IST
    Subject: sequence and series doubt -->;
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anchitsaini (4332)

Blazing goIITian

Olaaa!! Perrrfect answer. 792  [978 rates]
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If f(r)= rac{1}{1} + rac{1}{2} + rac{1}{3} + .... + rac{1}{r}

and  f(0) = 0

then find

[ r =1 ][ n ] (2r + 1)f(r)


(please give complete solution)

EDIT -->

Ans -- > (n+1)2 * f(n+1) - (n2 + 3n + 2) / 2
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