Saturday, 18 July 2026

Mini-exam feedback

TMA03 was a bit unusual in the sense that one of the questions was a mini-exam in the form of a Moodle quiz. Somebody on the forums described this mini-exam as 'hardcore' and in fairness, it probably was. I think it was designed to be, so that the actual exam will seem easier in comparison. One of the questions was particularly tricky. I can't give too much away for copyright reasons, but it involved raising a trig identity to a power and expressing it in terms of multiple angles. Looking at the feedback, it was definitively possible to do it using the algebra and the trigonometry we had covered in the module so far, but it was nonetheless fairly brutal. Trig identity manipulation can be tricky at the best of times. I used Maxima to do it, since GenAI is not allowed in this module, for either the coursework or the final exam.

I'm firmly in the sequencies and series part of the module now (Unit 10), which is the second to last topic. I'm also well into tackling TMA04, having completed the three matrices questions and three out of the four sequences & series questions. There's only complex numbers to go after this. I must admit that the tutorials for Unit 10 are a bit of a curate's egg, perhaps more so than the other topics.