1 |
f(n) |
1 |
f(n) |
1 |
n2+3n+2 |
1 |
n+1 |
1 |
n+2 |
1 |
2 |
1 |
3 |
1 |
3 |
1 |
4 |
1 |
n+1 |
1 |
n+2 |
1 |
2 |
1 |
n+2 |
n |
2(n+2) |
n |
2n+4 |
n |
2n+4 |
n |
n+1 |
A.最大值15 | B.最小值15 | C.最大值16 | D.最小值16 |
1 |
S1 |
1 |
S2 |
1 |
S100 |
1 |
3×5 |
2 |
5×7 |
3 |
7×9 |
4 |
9×11 |
A.(-1)n+1
| B.(-1)n+1
| ||||
C.(-1)n
| D.(-1)n
|
1+2+…+n |
n |
1 |
anan+1 |
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