Edexcel D1 — Question 3

Exam BoardEdexcel
ModuleD1 (Decision Mathematics 1)
TopicShortest Path

3. \begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{63f3ba38-8bca-4684-957f-aca7104f2f3e-03_734_1353_196_317} \captionsetup{labelformat=empty} \caption{Fig. 1}
\end{figure} Figure 1 shows a graph in which \(y \geq 0\).
Given that the graph is a weighted network,
  1. find the range of values for the path of lowest weight from \(S\) to \(T\). Given instead, that the graph is a capacitated network with the numbers representing the capacity along each arc,
  2. find the range of values for the maximum flow from \(S\) to \(T\).
  3. Give an example of a practical problem which could be solved by using:
    1. the weighted network in part (a),
    2. the capacitated network in part (b).