我在閱讀八月份《人民教育》所載黎有为先生《答王五占同志》一文之后,觉得尚有一点問題应該提出。黎先生文中說到高中二年級讲了指数概念普遍化之后,“根指数和被开方数的指数乘以同一正整数,根式的值不变”中,“正整数”这个限制就沒有必要了。拙意以为,“整数”概念,除包括“正整数”“負整数”外,还有一个最易被忽略的“零”。应該注意,就是讲了指数概念普遍化之后,对于上述性 After reading the article entitled “Comrade Wang Wuzhan” contained in Mr. Li Youwei contained in the August People’s Education, I think there is one more question that should be raised. In Mr. Li’s article, when the sophomore year of senior high school explained that the concept of the index is universal, the restriction of “positive integer” is not necessary in “the index of the root index and the square of the opening is multiplied by the same positive integer and the value of the root does not change” . Humble opinion, the concept of “integer”, in addition to including “positive integer” “negative integer”, there is a most neglected “zero.” It should be noted that after talking about the generalization of the concept of the index, the above mentioned