3
| ||
| 13 |
| 4 |
| 3 |
| AB |
| BC |
| AB |
| BC |
| AB |
| BC |
| OA |
| BC |
| OA |
| 13 |
| BC |
| OA |
| BC |
| ||||
|
|
| n |
|
| n |
|
| ||||
|
|
| 2 | ||
|
| 1 |
| 2 |
| BA |
| BC |
| 1 |
| 3 |
| AB |
| BC |
| AB |
| BC |
| AB |
| BC |
| OA |
| BC |
| OA |
| 13 |
| BC |
| OA |
| BC |
| ||||
|
|
| -12 | ||
4
|
3
| ||
| 13 |
3
| ||
| 13 |
| n |
|
| n |
|
| ||||
|
|
| 2 | ||
|
| 1 |
| 2 |
| BA |
| BC |
| 1 |
| 2 |
| 5 |
| 5 |
| 1 |
| 3 |
| 1 |
| 3 |
| 5 |
| 2 | ||
|
| 4 |
| 3 |
| (x-3)2+(y-1)2+z2 |
| (x+1)2+(y-1)2+z2 |
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