Sweeping the Floor in Qingbei and Solving the World's Mathematical Problems

Yang Keqin, the world's top mathematics professor in Longguo, wanted to test the level of the new doctoral students in the Department of Mathematics. The most difficult calculation in the world - the advanced Fourier calculation - is directly produced. This kind of calculation can only be solved by a few mathematical geniuses in the world. After Professor Yang asked this question, he actually had no hope that the doctoral students could answer it. But what surprised him was that on the second day after the question was given, there were 8 more ways to answer the question on the blackboard, and all 8 of them were correct. Professor Yang was extremely shocked and wanted to know which doctoral student had the answer, but when Professor Yang asked, no one acknowledged it. Finally, Professor Yang discovered that the person who solved this advanced Fourier equation turned out to be a young man from northern Qing Dynasty who only had a junior high school diploma! ! ! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.