负1乘2分之1加负2分之1乘3分之1加负3分之1。。。。负2013分之1乘2014分之1等于多少
上题为：(-0)*1/(0 1) [-1/(0 1)]*1/(0 2) [-1/(0 2)*1/(0 3) ~~~~ [-1/(0 2013)*1/(0 2014)因为：1/(a 1)*1/(a 2)=1/(a 1)-1/(a 2)且(a 1) (a 2) ~~~(a 2014)=[(a 1) (a 2014)]*2014/2所以把(-1/0)*1/(0 1) [-1/(0 1)]*1/(0 2) [-1/(0 2)*1/(0 3) ~~~~ [-1/(0 2013)*1/(0 2014)公式中的*全换成-=(-1/0)-1/(0 1) [-1/(0 1)]-1/(0 2) [-1/(0 ...全部
上题为：(-0)*1/(0 1) [-1/(0 1)]*1/(0 2) [-1/(0 2)*1/(0 3) ~~~~ [-1/(0 2013)*1/(0 2014)因为：1/(a 1)*1/(a 2)=1/(a 1)-1/(a 2)且(a 1) (a 2) ~~~(a 2014)=[(a 1) (a 2014)]*2014/2所以把(-1/0)*1/(0 1) [-1/(0 1)]*1/(0 2) [-1/(0 2)*1/(0 3) ~~~~ [-1/(0 2013)*1/(0 2014)公式中的*全换成-=(-1/0)-1/(0 1) [-1/(0 1)]-1/(0 2) [-1/(0 2)-1/(0 3)-1/(0 2014)=(-1/0)-{2*[1/(0 1) 1/(0 2014)]*2014/2}=(-1/0)-[1/(0 1) 1/(0 2014)]*2014=-1-2014=-2015好久不用学校的知识了，刚自己推算了下。
。。不知道对不对，仅供参考。收起
