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全日制十年制学校初中课本《数学》第一册复习题三(P145)中有一道我国古代数学问题:“假如井不知深,先将绳三折入井,绳长四尺,后将绳四折入井,亦长一尺。问井深及绳长各若干?答曰:井深八尺,绳长三丈六尺。”这道题选自明朝程大位所著的《算法统宗》(1502年)卷七。程大位。字汝思,号宾渠,安徽休宁人(另一说是新安人),生于公元一五三三年,卒年不详。他自幼酷爱学习,博览群书,从二十岁起,在长江中下游一带经商,同时研读数学。在经商中,他遍访名师,“遇有算数书籍,辄厚值购读”,经过研究整理,终
There is an ancient Chinese mathematics problem in the full-time 10-year school junior high school textbook “Mathematics” Book One Review Problem Three (P145): “If the well is not known well, first three-fold the rope into the well, the rope is four feet long, and the rope is four. Into the well, it is also a foot long. Ask the depth of the well and the length of the rope? Answer: The well is eight feet deep and the length of the rope is thirty feet and six feet.” This question is selected from the ”Masterpieces of the algorithm“ written by Cheng Dawei during the Ming Dynasty ( 1502) Volume VII. Cheng Dawei. The word 汝思, 号宾渠, Anhui 休宁人 (the other is Xinan), was born in 1353 AD, the death is unknown. He loves learning and reading books since he was young. From the age of twenty, he has been doing business in the middle and lower reaches of the Yangtze River and studying mathematics. In business, he visited famous teachers, ”in the case of arithmetic books, buy value," after research and consolidation, and finally