(-1)+2+(-3)+4+(-5...+(-2005)+2006+(-2007)+2008计算(后一项比前一项绝对值大1,且符号相反).(-1)+2+(-3)+4+(-5)+6...+(-2005)+2006+(-2007)+2008计算(后一项比前一项绝对值大1,且符号相反).怎么做?急急急!!
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/05 05:48:48
![(-1)+2+(-3)+4+(-5...+(-2005)+2006+(-2007)+2008计算(后一项比前一项绝对值大1,且符号相反).(-1)+2+(-3)+4+(-5)+6...+(-2005)+2006+(-2007)+2008计算(后一项比前一项绝对值大1,且符号相反).怎么做?急急急!!](/uploads/image/z/2593751-23-1.jpg?t=%28-1%29%2B2%2B%28-3%29%2B4%2B%28-5...%2B%28-2005%29%2B2006%2B%28-2007%29%2B2008%E8%AE%A1%E7%AE%97%EF%BC%88%E5%90%8E%E4%B8%80%E9%A1%B9%E6%AF%94%E5%89%8D%E4%B8%80%E9%A1%B9%E7%BB%9D%E5%AF%B9%E5%80%BC%E5%A4%A71%2C%E4%B8%94%E7%AC%A6%E5%8F%B7%E7%9B%B8%E5%8F%8D%29.%28-1%29%2B2%2B%28-3%29%2B4%2B%28-5%29%2B6...%2B%28-2005%29%2B2006%2B%28-2007%29%2B2008%E8%AE%A1%E7%AE%97%EF%BC%88%E5%90%8E%E4%B8%80%E9%A1%B9%E6%AF%94%E5%89%8D%E4%B8%80%E9%A1%B9%E7%BB%9D%E5%AF%B9%E5%80%BC%E5%A4%A71%2C%E4%B8%94%E7%AC%A6%E5%8F%B7%E7%9B%B8%E5%8F%8D%29.%E6%80%8E%E4%B9%88%E5%81%9A%3F%E6%80%A5%E6%80%A5%E6%80%A5%EF%BC%81%EF%BC%81)
(-1)+2+(-3)+4+(-5...+(-2005)+2006+(-2007)+2008计算(后一项比前一项绝对值大1,且符号相反).(-1)+2+(-3)+4+(-5)+6...+(-2005)+2006+(-2007)+2008计算(后一项比前一项绝对值大1,且符号相反).怎么做?急急急!!
(-1)+2+(-3)+4+(-5...+(-2005)+2006+(-2007)+2008计算(后一项比前一项绝对值大1,且符号相反).
(-1)+2+(-3)+4+(-5)+6...+(-2005)+2006+(-2007)+2008计算(后一项比前一项绝对值大1,且符号相反).怎么做?
急急急!!
(-1)+2+(-3)+4+(-5...+(-2005)+2006+(-2007)+2008计算(后一项比前一项绝对值大1,且符号相反).(-1)+2+(-3)+4+(-5)+6...+(-2005)+2006+(-2007)+2008计算(后一项比前一项绝对值大1,且符号相反).怎么做?急急急!!
-1+2=1
-3+4=1
-5+6=1
.
-2007+2008=1
一共是1004个1(2008/2),所以等于1004.