1/2-2/3的絕對(duì)值+2/3-3/4的絕對(duì)值+3/4-4/5的絕對(duì)值+``````+2010/2011-2011/2012的絕對(duì)值

數(shù)學(xué)人氣：477 ℃時(shí)間：2019-08-22 19:43:16

優(yōu)質(zhì)解答

1/2-2/3的絕對(duì)值+2/3-3/4的絕對(duì)值+3/4-4/5的絕對(duì)值+``````+2010/2011-2011/2012的絕對(duì)值
=2/3-1/2+3/4-2/3+4/5-3/4+..+2010/2011-2009/20010+2011/2012-2010/2011
=-1/2+2011/2012
=1005/2012
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