lai yuan: Wikipedia. ye mian: 37. zh ng: 0.999..., zh ng wen shu zi, xi f ng de shu zi ming ming f, ji shu xi t ng, yue nan y shu zi, ri y shu zi, er jin zhi cheng shu ci tou, lu m shu zi, x la shu zi, xi o shu di n, s zh u m zi, han wen shu zi, 300, yin du shu zi, yin du- l bo shu zi xi t ng, ya m i ni ya shu zi, 23, tai y shu zi, 19, 17, 2de mi, 24, l bo wen shu zi, 18, shu zi sh u shi, 26, bu qi xian shu zi, 20, 25, 16, 21, x bo lai shu zi, 39, 36, 31, ji shu, xi l r shu zi, 217, 304, 312, k xue ji shu f, 29, 38, 27, 32, 34, 320, 37, 35, 33, 310, g o mian shu zi, 319, 306, 180, 178, zh shu g lun bu m, 179, rong yu bei hao, 301, 303, ai qin shu zi, xi l r b i wan jie he fu, s ng qi jie, y n n y te shu zi. pian duan: zai shu xue de wan bei shi shu xi zh ng, xun huan xi o shu0.999..., y k xi cheng huo, bi o shi y ge d ng yu1de shi shu, ji 0.999... su bi o shi de shu y 1 xi ng tong zh ng q y lai, g i suan shu d ng shi gu ng fan bei quan qiu de shu xue ji su ji shou, bing zai xue xiao jiao k sh zh ng jiao shou mu qian g i d ng shi y j ng y u ge shi ge yang de zheng ming shi; t men ge y u bu tong de yan j n xing bei j ng ji she, qi d u yun han shi shu de shi zhi tiao jian, ji j m de g ng l li sh wen mai y ji mu bi o shou zhong zhe lei zh n k i shi de f i wei y xing bu j n xian yu shi jin zhi xi t ng, xi ng tong de xian xiang y ch xian zai qi t de zh ng shu jin wei zhi zh ng, shu xue ji men y lie j ch le y xi 1zai f i zh ng shu jin wei zhi zh ng de xi f, zhe zh ng xian xiang y bu shi j n j n xian yu1de: dui yu m i y ge f i ling de y u xian xi o shu, d u cun zai ling y zh ng han y u wu qiong du ge9de xi f, you yu ji n bian de yuan y n, w men j hu k n ding sh yong y u xian xi o shu de xi f, zhe yang jiu geng ji sh ren men wu y wei mei y u qi t xi f le, shi ji shang, y dan w men y n x sh yong wu xian xi o shu, na me zai su y u de jin wei zhi zh ng d u y u wu qiong du zh ng ti dai ...