1 |
3 |
1 |
2 |
1 |
3 |
1 |
3 |
2 |
3 |
1 |
3 |
1 |
3 |
2 |
3n |
2 |
3n |
2 |
3 |
2 |
3 n |
2 |
3 n |
1 |
3n |
1 |
3 |
1 |
3 2 |
1 |
3 3 |
1 |
3 n |
1 |
3 |
1 |
3 2 |
1 |
33 |
1 |
3 n |
1 |
3 n+1 |
2 |
3 |
1 |
3 |
1 |
3 2 |
1 |
3 3 |
1 |
3 n |
1 |
3 |
1 |
3 n+1 |
7 |
2 |
7 |
2 |
1 |
3 n |
n |
3 n-1 |
1 |
2 |
1 |
a |
1 |
b |
a+b |
a2+b2 |
A.1或
| B.1或-
| C.1或
| D.1或-
|
1 |
2 |
A.10 | B.11 | C.12 | D.14 |
1 |
4 |
bn | ||
1-
|
1 |
bn-1 |
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