|1/2004-1/2003|+|1/2003-1/2002|+|1/2002-1/2001|-|1/2001-1/2004|=?
来源:学生学帮网 编辑:学帮网 时间:2024/06/30 09:32:21
|1/2004-1/2003|+|1/2003-1/2002|+|1/2002-1/2001|-|1/2001-1/2004|=?
前面几个绝对值后与最后这个相减 等于0
|1/2004-1/2003|+|1/2003-1/2002|+|1/2002-1/2001|-|1/2001-1/2004|=?
前面几个绝对值后与最后这个相减 等于0