1/3+1/5+1/7+1/9+1/11+1/33+1/35+1/45+1/55+1/77
来源:百度知道 编辑:UC知道 时间:2024/09/27 21:19:43
1L第一步就错了..
5*7*9*11=3465
1/3+1/5+1/7+1/9+1/11+1/33+1/35+1/45+1/55+1/77
=1155/3465+693/3465+495/3465+385/3465+315/3465+105/3465+99/3465+77/3465+63/3465+45/3465
=3432/3465
=104/105
5*7*9*11=3456
1155/3456+693/3456+495/3456+385/3456+315/3456
=3043/3456
i`m sorry 粗心了 犯小学错误 呵呵
好暴力
1/1*3+1/3*5+1/5*7+........+1/17+19
(1-1/2)(1-1/3)(1-1/4)(1-1/5).....(1-1/1000)
1/2+1/3+1/4+1/5+.......+1/10
1/2+1/3+1/4+1/5+...+1/100
1/2+1/3+1/4+1/5******+1/2004=?
1/2×1/3×1/4×1/5×…×1/2008
1/1+1/3+1/5+.................+1/(2n-1)=?
1+1/3+1/5+1/7+......1/(2n-1)=?
1/3+1/3*5+1/5*7........1/99*101
1/1*3+1/2*4+1/3*5+...+1/48*50