发布网友 发布时间:2023-10-31 19:03
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热心网友 时间:2024-07-19 03:06
(1+1/n)(1-1/n)=1- 1/n*n=(n+1)(n-1)/n*n (1+1/2)(1-1/2)(1+1/3)(1-1/3)....(1+1/99)(1-1/99) =(3*1/2*2)(4*2/3*3)(5*3/4*4)........(98*96/97*97)(99*97/98*98)(100*98/99*99) =(1/2)*(100/99) =50/99 * 是乘号