P=1/2+1/3+1/4+….+1/2012 // 2011/1+2010/2+2009/3+….+1/2011

P=1/2+1/3+1/4+….+1/2012 // 2011/1+2010/2+2009/3+….+1/2011

0 bình luận về “P=1/2+1/3+1/4+….+1/2012 // 2011/1+2010/2+2009/3+….+1/2011”

  1. Đáp án:

     bai này khá dễ P=1/2012

    Giải thích các bước giải:

    P=1/2+1/3+1/4+1/5….+1/2012 / 2011/1+2010/2+2009/3+……+1/2011

    P=1/2+1/3+1/4+1/5….+1/2012 / 2011 + 2010/2+2009/3+….+1/2011

    P=1/2+1/3+1/4+1/5….+1/2012 / 1+(1+2020/2)+(1+2009/3)+….+(1+1/2011)

    P=1/2+1/3+1/4+1/5….+1/2012 / 2012/2012+2012/2 + 2012/3+….+2012/2011

    P=1/2+1/3+1/4+1/5….+1/2012 / 2012(1/2+1/3+….+1/2011+1/2012)

    P=1/2012

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  2. Đáp án:

     

    Giải thích các bước giải:

     P=1/2+1/3+1/4+….+1/2012 / 2011/1+2010/2+2009/3+……+1/2011

    P=1/2+1/3+1/4+….+1/2012 / 2011 + 2010/2+2009/3+….+1/2011

    P=1/2+1/3+1/4+….+1/2012 / 1+(1+2020/2)+(1+2009/3)+….+(1+1/2011)

    P=1/2+1/3+1/4+….+1/2012 / 2012/2012+2012/2 + 2012/3+….+2012/2011

    P=1/2+1/3+1/4+….+1/2012 / 2012(1/2+1/3+….+1/2011+1/2012)

    P=1/2012

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