计算:|1/2012-1/2011|+|1/2011-1/2010|+|1/2010-1/2009||+…+|1/3-1/2|+|1/2-1|

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/16 13:57:28
计算:|1/2012-1/2011|+|1/2011-1/2010|+|1/2010-1/2009||+…+|1/3-1/2|+|1/2-1|
x){nuӭj ta6o`eMe AcDZװ&H&•4K,o RRl:8$ $Aj<|ܧw>m~O)+.YlꆧO7`3{CP[GGG,EGNd

计算:|1/2012-1/2011|+|1/2011-1/2010|+|1/2010-1/2009||+…+|1/3-1/2|+|1/2-1|
计算:|1/2012-1/2011|+|1/2011-1/2010|+|1/2010-1/2009||+…+|1/3-1/2|+|1/2-1|

计算:|1/2012-1/2011|+|1/2011-1/2010|+|1/2010-1/2009||+…+|1/3-1/2|+|1/2-1|
:|1/2012-1/2011|+|1/2011-1/2010|+|1/2010-1/2009||+…+|1/3-1/2|+|1/2-1|
=1-1/2+1/2-1/3+……+1/2011-1/2012
=1-1/2012
=2011/2012

去绝对值,用大数减小数
|1/2012-1/2011|+|1/2011-1/2010|+|1/2010-1/2009||+…+|1/3-1/2|+|1/2-1|
=1/201-1/2012+1/2010-1/2011+,,,+1-1/2
=1-1/2012
=2011/2012