1 |
n |
an |
n |
n |
i=1 |
n |
an |
n |
i=1 |
17 |
24 |
an+1 |
(n+1)2 |
an |
n2 |
an |
n2 |
an |
n2 |
an |
n |
n |
i=1 |
n |
i=1 |
n |
i=1 |
2(1-2n) |
1-2 |
n |
i=1 |
n |
an |
1 |
n2n |
1 |
n2n |
n-1 |
n(n-1)2n |
n+1 |
n(n-1)2n |
1 |
(n-1)2n-1 |
1 |
n2n |
1 |
2 |
1 |
8 |
1 |
24 |
1 |
n2n |
1 |
2 |
1 |
8 |
1 |
24 |
1 |
3•23 |
1 |
4•24 |
1 |
(n-1)2n-1 |
1 |
n2n |
17 |
24 |
1 |
n(12-an) |
m |
32 |
1 |
3 |
1 |
log4an+1log4an+2 |
A.
| B.
| C.
| D.1-
|
© 2017-2019 超级试练试题库,All Rights Reserved.