The student has divided their work into three sections, with the body further subdivided into clear phases. The topic of the Internal Assessment is stated and explained in the introduction, and the aim is achieved and summarised in the conclusion. The work is clear and understandable throughout, with logical links between consequent parts. The exploration is 20 pages long, with 12pt font size and double spacing used, and all mathematical formulae are centered. However, the introduction lacks a clear description of mathematical concepts used, and the figures are not properly introduced or described.