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|1/3-1/2|+|1/4-1/3|+|1/5-1/4|+…+|1/2013-1/2014|
人气:109 ℃ 时间:2020-05-24 05:33:49
解答
原式=(1/2-1/3) +(1/3-/14)+.+(1/2012-1/2013)+(1/2013-1/2014)
=1/2-1/2014
=1006/2014
=503/1007
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