首先去掉括号,-1/2+1/3+1/4-1/3+1/5-1/4……不难发现可以约掉,所以到最后应该是-1/2+1/2005=-2003/4010
计算:|1/3-1/2|+|1/4-1/3|+|1/5-1/4|+······+|1/2005-1/2004|=|
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相关问题
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计算1+2+3+1+5+4+...+2004+2005+2004+...+4+3+2+1
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“简便计算:|1/2-1|+|1/3-1/2|+|1/4-1/3|+|1/5-1/4|+.+|1/2005-1/2004
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计算1/1*2+1/2*3+1/3*4+…+1/2004*2005.
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1.计算1-2+3-4+5-6+…… -2004+2005.
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1、计算:1-2+3-4+5-6+.2004+2005
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计算:|1/3-1/2|+|1/4-1/3|+|1/5-1/4|+······|1/2005-1/2004|=大神们帮帮
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计算:2005×(1/1×2+1/2×3+1/3×4+…+1/2003×2004+1/2004×2005)
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用规律计算:(-1*1/2)+(-1/2*1/3)+(-1/3*1/4)+``````+(-1/2004*1/2005)
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1/2+1/(2*3)+1/(3*4)+.+1/(2004*2005)+1/(2005*2006)
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1+2+3+4……+2004+2005+2004……+4+3+2+1=?