摘要: It is easy to see that for every fraction in the form 1 k (k > 0), we can always find two positive integers x and y, x ≥ y, such that: 1/ k = 1 /x + 1 阅读全文
posted @ 2018-03-30 20:42 子诚- 阅读(143) 评论(0) 推荐(0) 编辑