1 |
2 |
Sn |
2n+1 |
1 |
Sn |
1 |
Sn-1 |
1 |
Sn |
1 |
2n-1 |
Sn |
2n+1 |
1 |
(2n-1)(2n+1) |
1 |
2 |
1 |
2n-1 |
1 |
2n+1 |
1 |
2 |
1 |
1 |
1 |
3 |
1 |
3 |
1 |
5 |
1 |
2n-1 |
1 |
2n+1 |
n |
2n+1 |
1 | ||||
|
A.98 | B.99 | C.96 | D.97 |
1 |
4 |
an |
an+1 |
an+1 |
an |
an+1 |
n |
nπ |
2 |
A.1006 | B.2012 | C.503 | D.0 |
2 |
1×3 |
2 |
3×5 |
2 |
5×7 |
2 |
(2n-1)(2n+1) |
© 2017-2019 超级试练试题库,All Rights Reserved.