(1+1/2)*(1-1/2)*(1+1/3)*(1-1/3)*(1+1/4)*(1-1/4)*(1+1/5)*(1-1
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(1+1/2)*(1-1/2)*(1+1/3)*(1-1/3)*(1+1/4)*(1-1/4)*(1+1/5)*(1-1/5)=?
![(1+1/2)*(1-1/2)*(1+1/3)*(1-1/3)*(1+1/4)*(1-1/4)*(1+1/5)*(1-1](/uploads/image/z/2763006-6-6.jpg?t=%281%2B1%2F2%29%2A%281-1%2F2%29%2A%281%2B1%2F3%29%2A%281-1%2F3%29%2A%281%2B1%2F4%29%2A%281-1%2F4%29%2A%281%2B1%2F5%29%2A%281-1)
(1+1/2)*(1-1/2)*(1+1/3)*(1-1/3)*(1+1/4)*(1-1/4)*(1+1/5)*(1-1/5)
=(3/2)*(1/2)*(4/3)*(2/3)*(5/4)*(3/4)*(6/5)*(4/5)
=(1/2)*(6/5)
=3/5
=(3/2)*(1/2)*(4/3)*(2/3)*(5/4)*(3/4)*(6/5)*(4/5)
=(1/2)*(6/5)
=3/5
(1+1/2+1/3+1/4+1/5)*(1/3+1/4+1)-(1+1/3+1/4)*(1/2+1/3+1/4+1/5
2*1 1/2*1 1/3*1 1/4*1 1/5*.1 1/2006*1 1/2007
(1+1/2)*(1-1/2)*(1+1/3)*(1-1/3)*(1+1/4)*(1-1/4)*(1+1/5)*(1-1
(1-1/2)(1/3-1)(1-1/4)(1/5-1)``````(1/2009)(11/2010)
计算(1-1/2)(1/3-1)(1-1/4)(1/5-1)...(1/2013-1)(1-1/2014)
计算 ( 1+1/2)*(1-1/3)*(1+1/4)*(1-1/5)*.*(1+1/1000)*(1-1/1001)
/1/3-1/2/+/1/4-1/3/+/1/5-1/4/+.+/1/10-1/9/
简算:(1+1/2+1/3+1/4)×(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4+1/5)×(1/
提问题(1+1/2+1/3+1/4)×(1/2+1/3+1/4+1/5)-(1/2+1/3+1/4)×(1+1/2+1/
-1/2,+1/3,-1/4,+1/5,-1/6,.
(1-1/2)(1-1/3)(1-1/4).(1-1/99)(1-1/100)等于?
(1+1/1*3)*(1+1/2*4)*(1+1/3*5).(1+1/98*100)*(1+1/99*101)