|1/3-1/2|+|1/4-1/3|+...+|1/2010-1/2009|
1个回答
=1/2-1/3+1/3-1/4+1/4-1/5+……+1/2009-1/2010
=1/2-1/2010
=(1005-1)/2010
=1004/2010
=502/1005
相关问题
1.-|-3|= 2.+|-3|= 3.-|+3|= 4.|1/2011-1/2010|+|1/2010-1/2009|
(-1*1/2)+(-2*1/3)+(-3/1*1/4)+...+(-1/2009*2010)+(-1/2010*1/2
1/1*2+1/2*3+1/3*4+.1/2009*2010=?
1/1*2+1/2*3+1/3*4+…+1/2009*2010
2009/(2009又2010分之2009)/(1/2*3+1/3*4+...+1/2010*2011)
|1/2-1|+|1/3-1/2|+1/4-1/3|+...|1/2009-1/2008|+|1/2010-1/2009
1/(1*20)+1/(2*3)+1/(3*4).+1/(2009*2010)=?
1+2+3+4……+2009+2010与1-2+3-4……+2009-2010的规律
计算:|2/1-1|+|3/1-2/1|+|4/1-3/1|.+|2010/1-2009/1|?
(1)︱1/3+(-1/2)︱+︱1/4+(-1/3)︱+︱1/5+(-1/4)︱+.+︱1/2010+(-1/2009