x-2/2006+2/2007+x+2/2008=6
答案:2 悬赏:70
解决时间 2021-01-10 08:10
- 提问者网友：浪荡绅士
- 2021-01-09 23:54
x-2/2006+2/2007+x+2/2008=6
最佳答案
- 二级知识专家网友：持酒劝斜阳
- 2021-01-10 00:29
设y=2007 则y-1=2006 y+1=2008
则x/(y-1)+x/(y+1)=6+2/(y-1)-2/y-2/(y+1)
x*[2y/(y-1)(y+1)]=2(3+1/(y-1)-1/y-1/(y+1)]
yx=3(y²-1)+y+1-(y²-1)/y-(y-1)
yx=3y²-3+y+1-y+1/y-y+1
yx=3y²-y-1+1/y
所以x=3y-1-1/y+1/y²
即x=3*2007-1-1/2007+1/2007²
x=6020-1/2007+1/2007²
则x/(y-1)+x/(y+1)=6+2/(y-1)-2/y-2/(y+1)
x*[2y/(y-1)(y+1)]=2(3+1/(y-1)-1/y-1/(y+1)]
yx=3(y²-1)+y+1-(y²-1)/y-(y-1)
yx=3y²-3+y+1-y+1/y-y+1
yx=3y²-y-1+1/y
所以x=3y-1-1/y+1/y²
即x=3*2007-1-1/2007+1/2007²
x=6020-1/2007+1/2007²
全部回答
- 1楼网友：你哪知我潦倒为你
- 2021-01-10 01:24
2x=6-2/2008+2/2006-2/2007
x=3-1/2008+1/2006-1/2007
x=3-1/2008+1/2006-1/2007
我要举报
如以上问答内容为低俗、色情、不良、暴力、侵权、涉及违法等信息，可以点下面链接进行举报！
大家都在看
推荐资讯