若|x-1|+|y-3|=0,求1/xy+1/(x+2)(y+2)+1/(x+4)(y+4)+1/(x+6)(y+6).+1/(x+2010)(y+2010)的值!我做了,就是最后两步错了,不知道怎么错了,我把X=1,Y=3带入最后得到1/1*3+1/3*5+1/5*7+...+1/2011*2013=1-1/2013=2012/2013,老师给我扣了三分,

问题描述:

若|x-1|+|y-3|=0,求1/xy+1/(x+2)(y+2)+1/(x+4)(y+4)+1/(x+6)(y+6).+1/(x+2010)(y+2010)的值!我做了,就是最后两步错了,不知道怎么错了,我把X=1,Y=3带入最后得到1/1*3+1/3*5+1/5*7+...+1/2011*2013=1-1/2013=2012/2013,老师给我扣了三分,