SPS SPS FM 2020 September — Question 2

Exam BoardSPS
ModuleSPS FM (SPS FM)
Year2020
SessionSeptember
TopicSequences and Series

2 \end{array} \right)$$ where \(p\) and \(q\) are constants.
Given that \(\overrightarrow { A C }\) is parallel to \(\left( \begin{array} { r } 3
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3 \end{array} \right)\), find the value of \(p\) and the value of \(q\).
2. A sequence of numbers \(a _ { 1 } , a _ { 2 } , a _ { 3 } , \ldots\) is defined by $$\begin{aligned} a _ { 1 } & = 3
a _ { n + 1 } & = \frac { a _ { n } - 3 } { a _ { n } - 2 } , \quad n \in \mathbb { N } \end{aligned}$$
  1. Find \(\sum _ { r = 1 } ^ { 100 } a _ { r }\)
  2. Hence find \(\sum _ { r = 1 } ^ { 100 } a _ { r } + \sum _ { r = 1 } ^ { 99 } a _ { r }\)