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“[x]”是一种特殊的数学符号,它在各类数学竞赛中屡见不鲜.本文结合全国各省市的数学竞赛题,归纳出与“[x]”有关的三类常见题型,供同学们学习时参考.
“[x] ” is a kind of special math symbol, which is not uncommon in all kinds of math competitions.This paper combines the math competitions in all provinces and cities in China to conclude three types of common problems related to "[x] Type, for students to learn reference.