Published by:
CGP EDU Academic Team
Published on: August 12, 2026
If S n = 
, then 
equals
Text Solution
Verified by ExpertsThe correct answer is:
1
(1)
Sol. t n = S n – S n–1 = 
(2n 2 + 9n + 13) – 
{2(n – 1) 2 + 9(n – 1) + 13}
= 
[2n 3 + 9n 2 + 13n – 2(n – 1) 3 – 9 (n – 1) 2 – 13(n – 1)] = (n + 1) 2
= 
= 1
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