1 |
4 |
1 |
4 |
A.1<a,1<b | B.1<a且0<b<1 |
C.1<b且0<a<1 | D.0<a<1且0<b<1 |
1 |
4 |
1 |
4 |
1 |
4 |
log23 |
log29 |
8 |
5 |
1 |
2 |
1-x |
1+x |
1 |
2012 |
1 |
2013 |
1 |
2012 |
1 |
2013 |
1 |
x |
A.[
| B.(0,
| C.(0,+∞) | D.(-∞,0)∪(
|
A.[
| B.[4,16] | C.[
| D.[2,4] |
1 |
2 |
A.(-∞,1) | B.(3,+∞) | C.(-∞,3) | D.[5,+∞) |
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