1 |
a1 |
1 |
a2 |
1 |
a3 |
1 |
an |
5 |
3 |
n(n+1) |
2 |
2(1-2n) |
1-2 |
n(n+1) |
2 |
1 |
an |
1 |
2n-1 |
2n+1-1 |
(2n-1)(2n+1-1) |
2n+1 |
(2n-1)(2n+1-1) |
(2n+1-1)-(2n-1) |
(2n-1)(2n+1-1) |
1 |
2n-1 |
1 |
2n+1-1 |
1 |
a1 |
1 |
a2 |
1 |
a3 |
1 |
an |
1 |
22-1 |
1 |
23-1 |
1 |
23-1 |
1 |
24-1 |
1. |
2n-1 |
1 |
2n+1-1 |
1 |
22-1 |
1 |
2n+1-1 |
1 |
3 |
5 |
3 |
n |
2 |
a | 1 |
A.
| B.
| C.
| D.
|
| ||
2 |
nπ |
2 |
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