计算|1/2003-1/2002|+|1/2004-1/2003|-|1/2004-1/2002|

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/17 01:53:09
计算|1/2003-1/2002|+|1/2004-1/2003|-|1/2004-1/2002|
xOK0<!-e.zCt˂0O4ѸCWzia+X(&. &Mf2of$XPW9Ćĺ~`rI-cJ(yL(IC!5Teq s2Ήd\!ϡ7Y4on%2d&udN`nkm{˵F*|/"C

计算|1/2003-1/2002|+|1/2004-1/2003|-|1/2004-1/2002|
计算|1/2003-1/2002|+|1/2004-1/2003|-|1/2004-1/2002|

计算|1/2003-1/2002|+|1/2004-1/2003|-|1/2004-1/2002|
|1/2003-1/2002|+|1/2004-1/2003|-|1/2004-1/2002|
=1/2002-1/2003+1/2003-1/2004-1/2002+1/2004
=0

|1/2003-1/2002|+|1/2004-1/2003|-|1/2004-1/2002|
=(1/2002-1/2003)+(1/2003-1/2004)+(1/2002-1/2004)
=2/2002=1/1001

去绝对值得:1/2002-1/2003+1/2003-1/2004-1/2002+1/2004=0。。因为分母越小,值越大,所以这样去掉绝对值。。看得明白吧。。