(1+17/1)*(1+17/2)*(1+17/3)*...*(1+17/18) 之积除以 (1+19/1)*(1+19/2)*(1+19/3)*...*(1+19/18) = ?看清楚题

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/02 21:24:02
(1+17/1)*(1+17/2)*(1+17/3)*...*(1+17/18) 之积除以 (1+19/1)*(1+19/2)*(1+19/3)*...*(1+19/18) = ?看清楚题

(1+17/1)*(1+17/2)*(1+17/3)*...*(1+17/18) 之积除以 (1+19/1)*(1+19/2)*(1+19/3)*...*(1+19/18) = ?看清楚题
(1+17/1)*(1+17/2)*(1+17/3)*...*(1+17/18) 之积除以 (1+19/1)*(1+19/2)*(1+19/3)*...*(1+19/18) = ?
看清楚题

(1+17/1)*(1+17/2)*(1+17/3)*...*(1+17/18) 之积除以 (1+19/1)*(1+19/2)*(1+19/3)*...*(1+19/18) = ?看清楚题
不就是(1+17)(2+17)...(18+17)除以(1+19)(2+19)...(18+19)
约去中间项后为18*19/(36*37)=19/74