2 |
1-x |
A.(-1,0) | B.(0,1) | C.(-∞,0) | D.(-∞,0)∪(1,+∞) |
2 |
1+x |
2 |
1-x |
2 |
1+x |
2 |
1-x |
1-x |
2+a-ax |
2+a+ax |
1+x |
1+x |
1-x |
|
1 |
2 |
1 |
2 |
1 |
2 |
A.2009 | B.1 | C.0 | D.-1 |
A.f(sin
| B.f(sin
| ||||||||
C.f(sin
| D.f(sin1)<f(cos1) |
b |
x |
1 |
2 |
1 |
3 |
1 |
n |
n |
2(n+1) |
|
1 |
2 |
3 |
2 |
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