1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
n(n-1) |
2 |
n2 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
A.(-∞,0) | B.(0,+∞) | C.(-∞,loga3) | D.(loga3,+∞) |
3 |
4 |
3 |
2 |
A.1 | B.-1 | C.0 | D.-2 |
9-x2 |
A.5 | B.8 | C.13 | D.40 |
|
(a+b)-(a-b)•f(a-b) |
2 |
A.a | B.b |
C.b中较小的数 | D.a、b中较大的数 |
|
|
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