1/1*2+1/2*3+1/3*4+1/4*5+1/5*6+1/6*7+```+1/29*30
1/1*2+1/2*3+1/3*4+1/4*5+1/5*6+1/6*7+```+1/29*30
1/2+1/2*1/3+1/3*1/4+1/4*1/5+1/5*1/6+1/6*1/7+.1/1999*1/2000得多
1、求|1-1/2|+|1/2-1/3|+|1/3-1/4|+|1/4-1/5|+|1/5-1/6|+|1/6-1/7|
计算1+3+5+7+...+29-2-4-6-.-28
-1/2,+1/3,-1/4,+1/5,-1/6,.
1/1*2+1/2*3+1/3*4+1/4*5+1/5*6+1/6*7
(1-1/2^2)(1-1/3^2)(1-1/4^2)(1-1/5^2)(1-1/6^2)(1\1/7^2)(1-1/8
线性代数解行列式1/2 1/3 1/4 1/51/3 1/4 1/5 1/61/4 1/5 1/6 1/7 1/5 1/
(1)1+1/2+1/3+1/4+1/5+1/6+1/7+1/14+1/28
*89**2***1***5*9*6*****7*1**1****6*4**6****3*29****5**92***5
(1+1/2)*(1+1/4)*(1+1/6)*(1+1/8)*(1+1/3)*(1+1/5)*(1+1/7)*(1+1
化简:1/1*2+1/2*3+1/3*4+1/4*5+1/5*6+1/6*7+1/7*8+1/8*9+1/9*10