1/2+2/3+3/4.2012/2013
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/14 11:06:37
![1/2+2/3+3/4.2012/2013](/uploads/image/z/1329649-25-9.jpg?t=1%2F2%2B2%2F3%2B3%2F4.2012%2F2013)
xQ
@D"ڟ] !m)͠$ T,غӇC(M灳3 .-j~:Л`-[NE,
1/2+2/3+3/4.2012/2013
1/2+2/3+3/4.2012/2013
1/2+2/3+3/4.2012/2013
1/2+2/3+3/4+4/5+.+2012/2013
=(1-1/2)+(1-1/3)+(1-1/4)+..+(1-1/2013)
=2012-(1/2+1/3+1/4+..+1/2013)
=2011