1 |
bn-1 |
2t+3 |
3t |
a2 |
a1 |
an |
an-1 |
2t+3 |
3t |
2t+3 |
3t |
2t+3 |
3t |
2 |
3 |
1 |
t |
1 |
bn-1 |
2 |
3 |
2 |
3 |
2n+1 |
3 |
4 |
3 |
4 |
3 |
n |
2 |
5 |
3 |
4n+1 |
3 |
4 |
9 |
1 |
a1 |
1 |
a2 |
1 |
a3 |
1 |
a2012 |
A.
| B.
| C.
| D.
|
1 |
3 |
1 |
2 |
1 |
b1 |
1 |
b2 |
1 |
bn-1 |
m-8 |
4 |
|
1 |
1×2 |
1 |
2×3 |
1 |
3×4 |
1 |
4×5 |
1 |
2012×2013 |
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