t |
1 |
an |
3nlogtan |
3n-1 |
c2 |
2 |
c3 |
3 |
cn |
n |
4 |
3 |
t |
2(2n-1) |
2n |
1 |
2n-1 |
1 |
2 |
1 |
22 |
1 |
2n-1 |
1-
| ||
1-
|
1 |
2n |
1 |
2n |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
n•3n |
3n-1 |
3 |
2 |
c2 |
2 |
c3 |
3 |
cn |
n |
4 |
3 |
c1 |
1 |
c2 |
2 |
c3 |
3 |
cn |
n |
1 |
3 |
1 |
32 |
1 |
3n |
1 |
2 |
1 |
3n |
(1-
| ||||
1+
|
1+
| ||||||
1+
|
1+
| ||||||
1+
|
1+
| ||
1+
|
1 |
3 |
1 |
32 |
1 |
3n |
1+
| ||
1+1 |
1+
| ||
1+
|
1+
| ||
1+
|
1+
| ||
2 |
1 |
2 |
科目:高中數(shù)學 來源: 題型:
Sn | n |
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科目:高中數(shù)學 來源: 題型:
t |
3nlogtan |
3n- 1 |
c2 |
2 |
c3 |
3 |
cn |
n |
4 |
3 |
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