计算|1/3-1/2|+1/4-1/3|+|1/5-1/4|+.+|1/2006-1/2005|拜托各位了 3Q
计算|1/3-1/2|+1/4-1/3|+|1/5-1/4|+.+|1/2006-1/2005|拜托各位了 3Q
数学人气:390 ℃时间:2020-02-04 15:08:47
优质解答
观察,绝对值里都是小数减大数,所以,去掉绝对值,要反过来 即,原式=1/2-1/3+1/3-1/4+.+1/2005-1/2006=1/2-1/2006=501/1003
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