Theory of Intelligence
11TH•Mathematics•Mathematical Inductions And Binomial Theorem•Question 1

(ii)

Use mathematical induction to prove the following formulae for every positive integer $n$.

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(ii)

2+5+8+⋯+(3n−1)=n2(3n+1)2 + 5 + 8 + \cdots + (3n-1) = \dfrac{n}{2}(3n+1)

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