1+2+3+4+'''''''''''''''''''''''''''''''''''''''''''''''''''''+1999+2000-''''''''''''''''''''-x=?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/27 00:41:43
![1+2+3+4+'''''''''''''''''''''''''''''''''''''''''''''''''''''+1999+2000-''''''''''''''''''''-x=?](/uploads/image/z/3150238-22-8.jpg?t=1%2B2%2B3%2B4%2B%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%2B1999%2B2000-%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27-x%3D%3F)
x)3666V'hZZZjb֭I*ҧ%v6t=`utiuh@֫ЄрD q* zwO~6oUOo|n~qAb lU
1+2+3+4+'''''''''''''''''''''''''''''''''''''''''''''''''''''+1999+2000-''''''''''''''''''''-x=?
1+2+3+4+'''''''''''''''''''''''''''''''''''''''''''''''''''''+1999+2000-''''''''''''''''''''-x=?
1+2+3+4+'''''''''''''''''''''''''''''''''''''''''''''''''''''+1999+2000-''''''''''''''''''''-x=?
=(1+2000)/2*2000-(1+2+3+.x)
=(1+2000)/2*2000-(1+x)/2*x
=.结果自己算.