Sum to n terms of Special Series
Let us find the values (formula of (1), (2) and (3)
This is an A.P with .
Adding vertically both sides,
Let us consider the pattern:
All the formulae for can be proved by mathematical induction.
Find the sum to terms of the series whose term is
Find the sum of 20 terms of the series
term of the series
=(term of the A.P 1,2,3,..) (term of the series )
Find the sum to terms of the series 3+7+13+21+31+............
Find the sum to n terms of the series :