1 |
2 |
n+1 |
n |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
n |
2n |
n+1 |
n |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
|
3 |
4 |
A.(-∞,-1] | B.(-∞,0)∪(1,+∞) | C.[3,+∞) | D.(-∞,-1]∪[3,+∞) |
A.3×44 | B.3×44+1 | C.44 | D.44+1 |
A.150 | B.-200 | C.150或-200 | D.400或-50 |
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