(1)计算:(-| 1 |
| 5 |
| 1 |
| 3 |
| 2 | ||
|
| 3 |
|
| 12 |
| x |
| 3 |
| 3 |
| 5 |
| 2 |
| 5 |
| 2 |
| y x |
2 | 4 | 6 |
| 1 | (1,2) | (1,4) | (1,6) |
| 2 | (2,2) | (2,4) | (2,6) |
| 3 | (3,2) | (3,4) | (3,6) |
| 4 | (4,2) | (4,4) | (4,6) |
| 12 |
| x |
| 2 |
| 12 |
| 1 |
| 6 |
| 3 |
| 3 |
| 5 |
| 2 |
| 5 |
| 2 |
| y x |
2 | 4 | 6 |
| 1 | (1,2) | (1,4) | (1,6) |
| 2 | (2,2) | (2,4) | (2,6) |
| 3 | (3,2) | (3,4) | (3,6) |
| 4 | (4,2) | (4,4) | (4,6) |
| 12 |
| x |
| 2 |
| 12 |
| 1 |
| 6 |