|1/2011-1/2010|+|1/2010-1/2009|+…+|1/2-1| 怎么算?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/18 13:12:28
![|1/2011-1/2010|+|1/2010-1/2009|+…+|1/2-1| 怎么算?](/uploads/image/z/437916-12-6.jpg?t=%7C1%2F2011-1%2F2010%7C%2B%7C1%2F2010-1%2F2009%7C%2B%E2%80%A6%2B%7C1%2F2-1%7C+%E6%80%8E%E4%B9%88%E7%AE%97%3F)
x)17204S5o`YaXLװFYCߓMI*'W~
E>tO?iPS[jX(`Ih*h<|ܧw>m|Ͳ5!AdVM }:Ov}9} -/|ڿ϶u UCM 6F 1_ G>
|1/2011-1/2010|+|1/2010-1/2009|+…+|1/2-1| 怎么算?
|1/2011-1/2010|+|1/2010-1/2009|+…+|1/2-1| 怎么算?
|1/2011-1/2010|+|1/2010-1/2009|+…+|1/2-1| 怎么算?
原式
=(1/2010-1/2011)+(1/2009-1/2010)+...+(1/2-1/3)+(1-1/2) (去绝对值符号)
=1-1/2011 (去掉绝对值符号后,中间各项可以消去)
=2010/2011