计算1+(-2)+3+(-4)+5+(-6)+····+(+2013)+(-2014)
问题描述:
计算1+(-2)+3+(-4)+5+(-6)+····+(+2013)+(-2014)
答
1+(-2)+3+(-4)+5+(-6)+····+(+2013)+(-2014)
=[1+(-2)]+[3+(-4)]+[5+(-6)]+····+[(+2013)+(-2014)]
=-2014/2
=-1007