5 |
2 |
an+bn |
2 |
2anbn |
an+bn |
an+2 |
an-2 |
8 |
3 |
an+bn |
2 |
2anbn |
an+bn |
4 |
an |
1 |
2 |
4 |
an |
an+2 |
an-2 |
an+1+2 |
an+1-2 |
| ||||
|
an+2 |
an-2 |
an+2 |
an-2 |
cn+1 |
Cn |
2log3(
| ||
log3(
|
32n-1+1 |
32n-1-1 |
2 |
32n-1-1 |
4 |
32n-1-1 |
4 |
32n-1-1 |
8 |
3 |
4 |
32n-1-1 |
4 |
(32n-1)2-1 |
4 |
(32n-x+1)(32n-x-1) |
1 |
4 |
4 |
(32n-1+1)(32n-1) |
1 |
4 |
1 |
4 |
1 |
4 |
1 |
4 |
1 |
4 |
1 |
4 |
| ||||
1-
|
2 |
3 |
1 |
4 |
8 |
3 |
2 |
3 |
1 |
4 |
8 |
3 |
8 |
3 |
8 |
3 |
8 |
3 |
8 |
3 |
π |
2 |
π |
2 |
A.
| B.
| C.2 | D.4 |
1-x |
1+x |
A.关于x轴对称 | B.关于y轴对称 |
C.关于原点对称 | D.关于直线y=x对称 |
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