1+a2 |
1+a |
A.(
| B.(1,+∞) | C.(
| D.(0,
|
1+a2 |
1+a |
1+a2 |
1+a |
1 |
2 |
1 |
2 |
A.a>b>c | B.c>a>b | C.a>c>b | D.c>b>a |
A.f (a+1)=f (2) | B.f (a+1)>f (2) | C.f (a+1)<f (2) | D.不确定 |
A.6 | B.9 | C.12 | D.18 |
A.m<0,n>1 | B.m>0,n>1 | C.m>0,0<n<1 | D.m<0,0<n<1 |
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