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Graphs are such an essential tool for the physicist that this is the second Mathskit in this volume to focus on how to use graphs to analyse data and trends.
Quite often the area under a graph gives useful information about a physical situation. Mathematically, finding the area under a graph is known as integration and provided you know the equation of the line or curve, this can often be the best way of finding the area. However, integration is not essential for AS and A2 physics.
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