1 |
2 |
1 |
2 |
1 |
2 |
2(1-
| ||
1-
|
1 |
2n |
2-(-2) |
2 |
n(-2+2n-4) |
2 |
1 |
2n |
1 |
4 |
A.210 | B.240 | C.270 | D.360 |
1 |
a1 |
2 |
a2 |
n |
an |
5 |
24 |
an |
n |
1 |
b1b2 |
1 |
b2b3 |
1 |
bnbn+1 |
a2 |
a1 |
a3 |
a2 |
an |
an-1 |
2 |
A.-32 | B.32 | C.-64 | D.64 |
1 |
2 |
1 |
2 |
1 |
32 |
A.3 | B.4 | C.5 | D.6 |
a | 25 |
A.
| B.
| C.
| D.2 |
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