|1/2-1|+|1/3-1/2|+|1/4-1/3|+|1/5-1/4|+…+|1/2012-1/2011|
=1-1/2+1/2-1/3+1/3-1/4+1/4-1/5+...+1/2011-1/2012
=1-1/2012
=2011/2012
|1/2-1|+|1/3-1/2|+|1/4-1/3|+|1/5-1/4|+…+|1/2012-1/2011|计算
2个回答
相关问题
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|1/2|-1|+|1/3-1/2|+|1/4-1/3|+|1/5-1/4|.|1/2012-1/2011|
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|2/1-1|+|3/1-2/1|+4/1-3/1|+|5/1-4/1|+…+|2012/1-2011/1|=
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根据规律计算：（-1*1/2）+(-1/2*1/3）+(-1/3*1/4)+...+(-1/2011*1/2012)
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计算：（1-1/2^2）*(1-1/3^2)*(1-1/4^2)*.*(1-1/2011^2)*(1-1/2012^2)
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（-1*1/2）+（-1/2*1/3）+（-1/3*1/4）+.+(-1/2011*1/2012)+(-1/2012*1
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计算 [1/2-]+[1/3-1/2]+[1/4-1/3]+[1/5-1/4]+…+【1/2011-1/2010]+[1
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计算：﹣1×1/2＋（﹣1/2×1/3）＋（﹣1/3×1/4）＋···（﹣1/2011×1/2012）
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1×2／1+2×3／1＋3×4／1...2011×2012／1＝1-2/1+2/1-3/1+.+2011/1-2012/
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(-1*1/2)+(-1/2*1/3）+（-1/3*1/4）+...+（-1/2011*1/2012）
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计算:(1/2-1)(1/3-1)(1/4-1)...(1/2010-1)(1/2011-1)(1/2012-1)