l1/2005-1/2004l+l1/2004-1/2003l-l1/2005-1/2003l
=(1/2004-1/2005)+(1/2003-1/2004)-(1/2003-1/2005)
=1/2004-1/2005+1/2003-1/2004-1/2003+1/2005
=0
计算|1/2005-1/2004|+|1/2004-1/2003|-|1/2005-1/2003|=几?
1个回答
相关问题
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计算（2+1/2003+1/2004+1/2005)*(1/2003+1/2004+1/2005+1/2006)-(2+
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计算：（2+1/2003+1/2004+1/2005）*（1/2003+1/2004+1/2005+1/2006）-（2
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1/2001*2002+1/2002*2003+1/2003*2004+1/2004*2005+1/2005=?/?
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2001/2002+2002/2003+2003/2004+2004/2005+1/2005=?
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2003/2003*2003/2004+1/2005
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（2005+1/2003）乘1/2004=（2004+ ）=1/2004
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1+2+3...+2003+2004+2005+2006+2005+2004+2003+...3+2+1
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2004*2005-1分之2004+2005*2003
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计算2005/6+2005/12+2005/20+2005/30+...+2005/(2003×2004)+1/2004
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1/(21*2)+1/(2*3)···+1/(2002*2003)+1/(2003*2004)+1/(2004*2005