a |
a2-1 |
1 |
x |
a |
a2-1 |
1 |
x |
a |
a2-1 |
a |
a2-1 |
a |
a2-1 |
a |
a2-1 |
a |
a2-1 |
a |
a2-1 |
a |
a2-1 |
1 |
ax1+x2 |
a |
a2-1 |
1 |
ax1+x2 |
|
2 |
2 |
a |
b |
a |
b |
π |
3 |
π |
3 |
π |
3 |
A.f(sinπ)>f(cosπ) | B.f(sin1)<f(cos1) |
C.f(sin2)<f(cos2) | D.f(sin3)<f(cos3) |
A.(
| B.(0,
| C.(
| D.(0,1)∪(10,+∞) |
17 |
4 |
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