Blazing goIITian
if f(r)= 1 + 1/2 +1/3+ .....+1/r . and f(0)=0 . find (2r+1)f(r)... the summation varies from r=1 to r=n
Forum Expert Blazing goIITian
Please see http://www.goiit.com/posts/list/algebra-sequence-and-series-doubt-51499.htm