1 |
2 |
|
nf(n+1) |
f(n) |
|
lim |
n→∞ |
1 |
S1 |
1 |
S2 |
1 |
Sn |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 n |
1 |
2 n |
1 |
2 n |
n |
2n |
1 |
2 |
2 |
22 |
n-1 |
2 n-1 |
n |
2n |
1 |
2 |
1 |
2 |
1 |
22 |
2 |
2 3 |
n-1 |
2 n |
n |
2 n+1 |
1 |
2 |
1 |
2 |
1 |
2 2 |
1 |
23 |
1 |
2 n |
n |
2 n+1 |
| ||||
1-
|
n |
2 n+1 |
1 |
2 n |
n |
2 n+1 |
1 |
2 n-1 |
n |
2 n+1 |
nf(n+1) |
f(n) |
n×
| ||
|
n |
2 |
1 |
2 |
2 |
2 |
3 |
2 |
n |
2 |
n(n+1) |
4 |
1 |
S1 |
1 |
S2 |
1 |
S3 |
1 |
Sn |
1 |
2 |
1 |
2 |
1 |
3 |
1 |
3 |
1 |
4 |
1 |
n |
1 |
n+1 |
1 |
n+1 |
lim |
n→∞ |
1 |
S1 |
1 |
S2 |
1 |
Sn |
lim |
n→∞ |
1 |
n+1 |
. |
a1a2…an |
lim |
n→∞ |
Sn |
Tn |
lim |
n→∞ |
|
lim |
n→∞ |
lim |
n→∞ |
1 | ||
|
3 |
2 |
lim |
n→∞ |
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