(+1)+(-2)+(+3)+(-4)+...+(+99)+(-100)这道题怎么做,
问题描述：
(+1)+(-2)+(+3)+(-4)+...+(+99)+(-100)这道题怎么做,
答
(+1) + (-2) = (1-2) = -1(+1) + (-2) + (+3) + (-4) = (1-2) + (3-4) = -1 -1 = -2= (-1) X 4 / 2(+1) + (-2) + (+3) + (-4) + (+5) + (-6) = (1-2) + (3-4) + (5-6) = -1 -1 -1 = -3= (-1) X 6 / 2绝对值最大是 -2...