The sum of the first $n$ terms of a sequence is given by $S_{n} = 3n - n^{2}$. Prove that the se

Question

The sum of the first $n$ terms of a sequence is given by $S_{n} = 3n - n^{2}$. Prove that the series is an arithmetic series and state the common difference.

Accepted Answer

Arithmetic series with common difference $d = -2$

Sequence and Series - Proving the progression

Sequence and Series - Proving the progression

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