[中學] 幾題奧數分數問題請教

看板Math作者ccccc7784 (龍王號)時間13年前 (2012/05/14 16:45)推噓2(2推 0噓 2→)

留言4則, 2人參與討論串1/1

(1) (4^2+1/4)(16^2+1/4)(36^2+1/4)(64^2+1/4)....(400^2+1/4) ______________________________________________________ =? (1^2+1/4)(9^2+1/4)(25^2+1/4)(49^2+1/4)....(361^2+1/4) (2) (1+17/3)(1+17/4)(1+17/5)....(1+1) ___________________________________ ＝? (1+19/3)(1+19/4)(1+19/5)....(1+1) 想請教這兩題應該如何解? 感恩。 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 210.242.37.73

推

Sinful

05/14 17:54, , 1^F

05/14 17:54, 1^F

推

Sinful

05/14 17:56, , 2^F

05/14 17:56, 2^F

→

ccccc7784

05/15 09:09, , 3^F

05/15 09:09, 3^F