计算1+(-2)+3+(-4)+5+(-6)+····+(+2013)+(-2014)

问题描述:

计算1+(-2)+3+(-4)+5+(-6)+····+(+2013)+(-2014)

1+(-2)+3+(-4)+5+(-6)+····+(+2013)+(-2014)
=[1+(-2)]+[3+(-4)]+[5+(-6)]+····+[(+2013)+(-2014)]
=-2014/2
=-1007