Sn |
Tn |
2n |
3n+1 |
∴
S2n?1 |
T2n?1 |
2(2n?1) |
3(2n?1)+1 |
4n?2 |
6n?2 |
2n?1 |
3n?1 |
∴
an |
bn |
(2n?1)an |
(2n?1)bn |
S2n?1 |
T2n?1 |
2n?1 |
3n?1 |
故答案為:
2n?1 |
3n?1 |
Sn |
Tn |
2n |
3n+1 |
an |
bn |
Sn |
Tn |
2n |
3n+1 |
S2n?1 |
T2n?1 |
2(2n?1) |
3(2n?1)+1 |
4n?2 |
6n?2 |
2n?1 |
3n?1 |
an |
bn |
(2n?1)an |
(2n?1)bn |
S2n?1 |
T2n?1 |
2n?1 |
3n?1 |
2n?1 |
3n?1 |