计算:(1/2006-1)(1/2005-1)(1/2004)… (1/3-1)(1/2-1).
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计算:(1/2006-1)(1/2005-1)(1/2004)… (1/3-1)(1/2-1).
计算:(1/2006-1)(1/2005-1)(1/2004)… (1/3-1)(1/2-1).
计算:(1/2006-1)(1/2005-1)(1/2004)… (1/3-1)(1/2-1).
原式=-(1-1/2006)(1-1/2005)...(1-1/3)(1-1/2)
=-(2005/2006)(2004/2005)...(2/3)(1/2)
连续约分后
原式=-1/2006
(1/2006-1)(1/2005-1)(1/2004)… (1/3-1)(1/2-1)
=(-2005/2006)(-2004/2005)(-2003/2004)……(-2/3)(-1/2)
=-1/2006
(1/2006-1)(1/2005-1)(1/2004)… (1/3-1)(1/2-1).
=(-2005/2006)(-2004/2005)……(-2/3)(-1/2)
=-1/2006
(1/2006-1)(1/2005-1)(1/2004)… (1/3-1)(1/2-1)=(-2005/2006)(-2004/2005).....(-2/3)(-1/2)= -1/2006
由于有2005个负号