杨辉三角形(如图)亦称贾宪三角形,又称巴斯卡三角形.之所以称为杨辉三角形,是因为它首先载于我国宋朝数学家杨辉于公元1261年所著的《详解九章算法》一书.为什么亦称贾宪三角形呢?是因为杨辉在《详解九章算法》一书中说这个方法是出于《释镇算书》,贾宪曾经用过,但《释镇算书》早已失传.贾宪是北宋数学 Yang Hui triangle (pictured), also known as Jia Xian triangle, also known as the Pascal triangle.The reason is called the Yang Hui triangle, because it is first contained in the Chinese mathematician Yang Hui in 1261 CE “detailed nine chapters algorithm” Why is also called Jiaxian triangle? Because Yang Hui in the “Detailed Chapter 9 algorithm,” a book that this method is for “interpretation of the town book,” Jia has been used, but “town book” Already lost. Jiaxian is the Northern Song Dynasty mathematics