Consider the following directed graph G. The numbers next to each edge denote the cost of the edge. (There are arrows; they're just tiny.) 2 4 2 3 2 (a) Run Dijsktra's algorithm to find d(s, v) (the shortest distance from s to v) for all vertices v. (b) Change the cost of edge (b, a) to –2. What is the shortest distance from s to a now? (You can answer this by inspecting the graph.) Run Dijkstra's algorithm until it creates an error, and explain what went wrong (and why).

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Computational Systems

The computation systems can be defined as the systems that are capable of solving a problem that includes calculations either mathematical or logical, and are able to produce the result as an output. For example, a simple calculator that is given a set of numbers and operators as input and produces the result as an output can be defined as a computational system. The above example is a simple illustration only, the computational systems range from simple devices to complex devices such as the systems that control the SpaceX companies, Starlink satellites which are being quite recently seen in the skies at many places globally.