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(1/2-1)+(1/3-1/2)+(1/4-1/3)+.+(1/2014-1/2013)的值
人气:156 ℃ 时间:2019-09-17 22:03:03
解答
|1/3-1/2|+|1/4-1/3|+|1/5-1/4|+…+|1/2014-1/2013|.
=1/2-1/3+1/3-1/4+1/4-1/5+……+1/2013-1/2014
=1/2-1/2014
=553/1007
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