(-1)+(+2)+(-3)+(+4)+...(-2001)+(+2002)+(-2003)+(+2004)=?
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/08/01 13:54:13
(-1)+(+2)+(-3)+(+4)+...(-2001)+(+2002)+(-2003)+(+2004)=?
![(-1)+(+2)+(-3)+(+4)+...(-2001)+(+2002)+(-2003)+(+2004)=?](/uploads/image/z/7120155-3-5.jpg?t=%EF%BC%88-1%EF%BC%89%2B%EF%BC%88%2B2%EF%BC%89%2B%EF%BC%88-3%EF%BC%89%2B%EF%BC%88%2B4%EF%BC%89%2B...%EF%BC%88-2001%EF%BC%89%2B%EF%BC%88%2B2002%EF%BC%89%2B%EF%BC%88-2003%EF%BC%89%2B%EF%BC%88%2B2004%EF%BC%89%3D%3F)
很明显前两项等于1,之后每两项都是1,一共2004/2=1002个1,所以等于1002
(-1)+(+2)+(-3)+(+4)+...(-2001)+(+2002)+(-2003)+(+2004)=?
(-1)+(+2)+(-3)+(+4)+...(-2001)+(+2002)+(-2003)+(+2004)
(-1)+(+2)+(-3)+(+4)…(+2001)+(+2002)+(-2003)+(+2004).
1+2+(-3)+(-4)+5+6+(-7)+(-8)+…+2001+2002+(-2003)+(-2004)+2005
计算(1+3+5+.+2001+2003+2005)-(2+4+6+.+2000+2002+2004)
2001*2002*2003*2004+6-(2002*2002+2001)*(2002*2002+2001)=?
1+(-2)+(-3)+4+5+(-6)+(-7)+8……+2001+(-2002)+(-2003)+2004=?
计算:(2005+2003+2001+…+3+1)-(2+4+6+…+2002+2004)=______.
(1+3+5+……+2001+2003+2005)—(2+4+6+……+2000+2002+2004)=
(-1)+(+2)+(-3)+(+4)+…(-2001)+(+2002)+(-2003)+(+2014)怎么写
已知A=-(2001×2002/2003×2004),B=-(2001×2003/2002×2004),C=-(2001
2道计算题哦(1)、2008+2007-2006-2005+2004+2003-2002-2001+...+4+3-2-