1/1x3x5+1/3x5x7+1/5x7x9+…+1/95x97x99简便算法怎么算
1个回答
展开全部
1/1x3x5+1/3x5x7+1/5x7x9+…+1/95x97x99
=1/4(1/(1*3)-1/(3*5)+1/(3*5)-1/(5*7)+.....+1/(95*97)-1/(97*99)
= (1/4) ( 1/(1x3) - 1/(97x99)
= (1/4) (1/3 - 1/9603]
=800/9603
=1/4(1/(1*3)-1/(3*5)+1/(3*5)-1/(5*7)+.....+1/(95*97)-1/(97*99)
= (1/4) ( 1/(1x3) - 1/(97x99)
= (1/4) (1/3 - 1/9603]
=800/9603
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询