我要过程挖``````````````````(*+﹏+*)~@
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 03:52:09
![我要过程挖``````````````````(*+﹏+*)~@](/uploads/image/z/2674873-1-3.jpg?t=%E6%88%91%E8%A6%81%E8%BF%87%E7%A8%8B%E6%8C%96%60%60%60%60%60%60%60%60%60%60%60%60%60%60%60%60%60%60%28%2A%2B%EF%B9%8F%2B%2A%29%7E%40)
我要过程挖``````````````````(*+﹏+*)~@
我要过程挖``````````````````(*+﹏+*)~@
我要过程挖``````````````````(*+﹏+*)~@
=(1+2-3)+(-4+5+6-7)+(-8+9+10-11)+.(-2004+2005+2006-2007)+(-2008+2009)
=1
1+2+5+6+9+10+...+2005+2006+2009-3-4-7-8-11-12-...-2007-2008=0
=0