(1-1/2008)*(1+1/2007)*(1-1/2006)*(1+1/2005)*(1-1/2004)*(1+1/2003)
(1-1/2008)*(1+1/2007)*(1-1/2006)*(1+1/2005)*(1-1/2004)*(1+1/2003)
人气:417 ℃ 时间:2020-03-28 07:21:10
解答
(1-1/2008)*(1+1/2007)*(1-1/2006)*(1+1/2005)*(1-1/2004)*(1+1/2003)
=(2007/2008)*(2008/2007)*(2005/2006)*(2006/2005)*(2003/2004)*(2004/2003)
=1.
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