1、若a,b都大于0,则原式=1+1-1=1.
2、若a,b都小于0,则原式=-1-1-1=-3.
3、若a>0,b<0,则原式=1-1+1=1.
4、若a<0,b>0,则原式=-1+1+1=1.
若ab不等于0,求a/|a|+|b|/b-|ab|/ab的值
若ab不等于0,求a/|a|+|b|/b-|ab|/ab的值
数学人气:938 ℃时间:2020-04-20 17:10:38
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