例1丢番图(2世纪时希腊数学家)的墓碑上的墓志铭记载:“哲人丢番图,在此处埋葬,奉命相当长.六分之一是童年,十二分之一是少年,又过了生命的七分之一,娶了新娘,五年后生了个儿郎,不幸儿子只活了父亲寿命的一半,先父四年亡.丢番图到底寿多长?”(第11届初一培训) The epitaph on the tombstone of Diphthol in Example 1 (Greek mathematician in the 2nd century) records: “The philosopher Diphthenic, buried here, was ordered quite long. One-sixth is childhood and one-twelfth is juvenile. And after one-seventh of life, married the bride and gave birth to a child five years later, unfortunately, the son only survived half of his father’s life span. His father died in four years. How long does the Divine Figure last?” (No. 11 First session training