1-1/2-1/6-1/6-1/12-1/20·······-1/99*100 咋寫(xiě)
1-1/2-1/6-1/6-1/12-1/20·······-1/99*100 咋寫(xiě)
數(shù)學(xué)人氣：967 ℃時(shí)間：2020-04-04 10:33:36
優(yōu)質(zhì)解答
1-1/2-1/6-1/12-1/20·······-1/99*100=1-(1/2+1/6+1/12+1/20·······+1/99*100)=1-(1-1/2+1/2-1/3+1/3-1/4+1/4-1/5+······+1/99-1/100)=1-(1-1/100)=1-99/100=1/100
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