2026 PHS P1 Q10

2026 PHS P1 Q10

Secondary 4
3 marks

The sum of the first \(n\) terms of a linear sequence is \(\dfrac12n(7n-3)\).

  1. Find the first 3 terms of the sequence.[2]
  2. Find, in terms of \(n\), an expression for the \(n\)th term of the sequence.[1]

Solution:

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Answer:(a) \(2,9,16\) (b) \(7n-5\)

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