|1-1/2|+|1/2-1/3|+|1/3-1/4|+.|1/2010-1/2011| 题目有些麻烦,请大家帮帮忙做.
2个回答
绝对值里边都是正数,因此可以直接去掉绝对值,将此式化简为:
1-1/2+1/2-1/3+1/3-1/4+.+1/2010-1/2011
=1-1/2011
=2010/2011
相关问题
(1-1/2*2)(1-1/3*3)(1-1/4*4).(1-1/2010*2010)(1-1/2011*2011)
请计算1/1*2+1/2*3+1/3*4+……+1/2010*2011等于多少
1.-|-3|= 2.+|-3|= 3.-|+3|= 4.|1/2011-1/2010|+|1/2010-1/2009|
|1-1/2|+|1/2-1/3|+|1/3+1/4|+…+|1/2010-1/2011|.
(1-1/2)+(1/2-1/3)+(1/3-1/4)+…+(1/2010-1/2011)=?
(1/1-2)+(1/2-1/3)+(1/3-1/4+.+1/2010-1/2011)=?急
计算|1/2-1|+|1/3-1/2|+|1/4-1/3|+……+|1/2011-1/2010|
计算:(-1-1)(1-2)(2-3)(3-4)…(2010-2011)=______.
数学题(-1*1/2)+(-1/2*1/3)+(-1/3*1/4)+.(-1/2010*1/2011)
(1+1/2+1/3+.+1/2010)×(1/2+1/3+.+1/2011)-(1+1/2+1/3+.+1/2011)