a |
b |
a |
b |
1 |
2 |
1 |
2 |
a |
a |
b |
a |
b |
A.[0,
| B.[0,
| C.(
| D.(
|
3 |
2 |
a |
a |
b |
1 |
2 |
1 |
2 |
a |
a |
b |
a |
a |
b |
a |
b |
a |
b |
1 |
2 |
π |
3 |
f(x1)-f(x2) |
x1-x2 |
A.f(sinA)>f(cosB) | B.f(sinA)<f(cosB) |
C.f(sinA)<f(sinB) | D.f(cosA)<f(sinB) |
|
A.(1,2) | B.(2,3) | C.(2,3] | D.(2,+∞) |
2 | ||
|
A.第10项 | B.第9项 | C.第8项 | D.第7项 |
f(x1)-f(x2) |
x1-x2 |
f(x1)-f(x2) |
x1-x2 |
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