2an+1-an |
2an-an+1 |
1 | ||
|
1 | ||
|
1 | ||
|
1 |
an+1 |
1 |
an |
1 |
an |
1 |
a1 |
8 |
3 |
1 |
an |
8 |
3 |
2n+2 |
3 |
1 |
3 |
22n+2+9 |
1 |
a1 |
1 |
a2 |
1 |
an |
23 |
3 |
24 |
3 |
25 |
3 |
2n+2 |
3 |
64 |
27 |
64 |
27 |
4n-1 |
27 |
3
| ||||
27 |
n |
9 |
3n-1 |
2 |
n |
9 |
3n-1 |
2 |
a | 1 |
a | n+1 |
| ||
|
| ||
2 |
| ||
3 |
| ||
4 |
| ||
n+1 |
1 |
12 |
1 |
22 |
1 |
32 |
1 |
n2 |
A.0 | B.1 | C.2 | D.3 |
1 |
2 |
1 |
2 |
an+1 |
an |
ak+1 |
ak |
© 2017-2019 超级试练试题库,All Rights Reserved.