x-y |
1-xy |
1 |
5 |
1 |
11 |
1 |
r2+r-1 |
1 |
20122+2012-1 |
1 |
2 |
x-y |
1-xy |
0-0 |
1-0 |
0-x |
1-0 |
1 |
2 |
x-y |
1-xy |
x-y |
1-xy |
x-y |
1-xy |
x-y+1-xy |
1-xy |
(1+x)(1-y) |
1-xy |
x-y |
1-xy |
x-y |
1-xy |
1 |
2 |
1 |
5 |
1 |
11 |
1 |
r2+r-1 |
1 |
20122+2012-1 |
1 |
5 |
1 |
11 |
1 |
r2+r-1 |
1 |
20122+2012-1 |
1 |
r2+r-1 |
1 |
r(r+1)-1 |
| ||||
1+
|
1 |
r |
-1 |
r+1 |
1 |
r |
1 |
r+1 |
1 |
5 |
1 |
11 |
1 |
r2+r-1 |
1 |
20122+2012-1 |
1 |
2 |
1 |
3 |
1 |
3 |
1 |
4 |
1 |
4 |
1 |
5 |
1 |
2012 |
1 |
2013 |
1 |
2 |
1 |
2013 |
1 |
2013 |
1 |
2 |
1 |
2013 |
1 |
2 |