We end this series of problems for the 2023 PC competitive examination with this interminable subject, which goes off in just about every direction: polynomials, Python programming, integer series, summation of double series and finally probability. In my …

The first part of the answer key for the (very long) maths 2 PC subject. Answers to the Maths 2 test on May 12 in the PC Centrale Supelec 2023 exam: Problem set: …

The subject was quite dense, with many questions (35 compared with, for example, 24 for the Mines-Ponts 1 subject); however, there were many relatively simple questions, or those with a generous indication. The subject focused on the spectral radius of mat…

The subject was Markov chains. A discrete system was modeled, with the number of transitions in the interval \([0,t]\) following a Poisson distribution. Quite a few tricky sum calculations, but the subject seemed a little simpler than the 1st, and in any cas…

The topic was convexity, but involved a lot of algebra with manipulations of positive symmetric matrices. Part 5 was quite interesting, with a mixture of analysis and algebra. We were asked to derive matrix functions, in particular the trace. Perhaps the…