UC知道1/2*4+1/4*6+1/6*8+1/48*50
来源：百度知道 编辑：UC知道 时间：2024/05/13 16:24:32
1/2*4+1/4*6+1/6*8+.......1/48*50
=1/2(1/2-1/4)+1/2(1/4-1/6)+1/2(1/6-1/8)+.....1/2(1/48-1/50)
=1/2(1/2-1/4+1/4-1/6+...+1/48-1/50)
=1/2(1/2-1/50)
=6/25
题目会否有误，原式是否就为：1/2*4+1/4*6+1/6*8+1/48*50=1/8+1/24+1/48+1/48×50=(6×50+2×50+50+1)/48×50=451/2400
3
141/24
有意思么？
2+3/2+4/3+25/24=141/24
(1+1/2+1/3+1/4)×
1/1+1/2+1/3+1/4+。。。。+1/N 是多少
1/1+1/2+1/3+1/4+......1/2002＝？
1-1/2+1/3-1/4+........1/99-1/100
1+1/2+1+1/3+1+1/4+......+1/100=?
(1/2) (1/4+1/6)=
(1-1/2)(1-1/3)(1-1/4)(1-1/5).....(1-1/1000)
(1+1/2)(1+1/2^2)(1+1/2^4)(1+1/2^8)
(1-1/2^2)*(1-1/3^2)*(1-1/4^2).......(1-1/100^2)
s=1/1+1/1!+1/2！+1/3！+1/4！+....+1/25!