SwissMicros DM-15L, RPN vs Algebraics, and Suitability for School / Exams

This turned out longer than it should have been. I have a look at two problems, one derived from a GCSE paper, another real-life scenario and pit the DM-15L against the fx-992s, fx-115w, and school darling, fx-85gt-cw. I also have a look at whether the DM-15L is allowed is school exams in the UK.

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