Edexcel D1 — Question 5

Exam BoardEdexcel
ModuleD1 (Decision Mathematics 1)
TopicFixed Point Iteration

5. This question should be answered on the sheet provided. An algorithm is described by the flow chart shown in Figure 1 below. \begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{1e518ab0-9852-4d1d-a4c9-344a5edf9547-05_1337_937_388_404} \captionsetup{labelformat=empty} \caption{Fig. 1}
\end{figure}
  1. Complete the table on the answer sheet recording the results of each instruction as the algorithm is applied and state the final output.
  2. Explain what the algorithm achieves.
  3. Attempt to apply the algorithm again, with the initial value of \(a\), as specified in Box 2, changed to 5 . Explain what happens.
    (2 mark)
  4. Find the set of positive initial values of \(a\) for which the algorithm will work.
    (2 marks)