Abstract
Usually, all the applications of dynamic geometry systems (DGS) presented to our students are strictly mathematical, meanwhile their interests are normally far away from mathematics. We would like to introduce here a motivating example outside the “standard applications” of DGS, presenting a completely different application of this kind of software. It is well-known that a tennis player should not always recover to the centre of the court. Several authors and coaches maintain that the best place where a tennis player should recover (usually known as “recovery position”) is a point that lies on the angle bisector of the angle formed by the union of all the possible trajectories of a shot of the opponent. The purpose of this paper is to show how a DGS can justify why the recovery position is nearby, but is not exactly on the angle bisector of the aforementioned angle.
Published Version
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