1 |
2 |
(n+1)(2an-n) |
an+4n |
|
1 | ||
3
|
2
| ||
12 |
1 |
2 |
(n+1)(2an-n) |
an+4n |
an+1+t(n+1) |
an+1+n+1 |
an+tn |
an+n |
| ||
|
an+tn |
an+n |
(t+2)an+(4t-1)n |
3an+3n |
an+tn |
an+n |
t-1 |
3 |
an+tn |
an+n |
t-1 |
3 |
an-2n |
an+n |
a1-2 |
a1+1 |
-n2+2n |
n+1 |
2
| ||
12 |
1 |
2 |
(n+1)(2an-n) |
an+4n |
3 |
4 |
8 |
5 |
an+1+t(n+1) |
an+1+n+1 |
an+tn |
an+n |
| ||
|
an+tn |
an+n |
(t+2)an+(4t-1)n |
3an+3n |
an+tn |
an+n |
t-1 |
3 |
an+tn |
an+n |
t-1 |
3 |
t-1 |
3 |
an-2n |
an+n |
a1-2 |
a1+1 |
-n2+2n |
n+1 |
1 | ||||
3
|
-n-3 | ||
(
|
1 |
2 |
1 | ||
(
|
1 | ||
(
|
1 |
2 |
1 | ||
(
|
1 | ||
|
1 | ||
(
|
1 | ||
(
|
1 | ||
(
|
1 | ||
(
|
1 | ||
(
|
1 | ||
(
|
1 |
2 |
1 | ||
|
1 |
6 |
1 | ||
(
|
1 | ||
(
|
1 |
2 |
1 | ||
|
1 |
6 |
2
| ||
12 |
2
| ||
12 |
科目:高中數(shù)學 來源: 題型:
3+4an |
12-4an |
1 | ||
an-
|
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科目:高中數(shù)學 來源: 題型:
3 |
2 |
3nan-1 |
2an-1+n-1 |
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科目:高中數(shù)學 來源: 題型:
5 | 4 |
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