π |
2 |
A.
| B.f(1)<2f(
| ||||||||||||
C.
| D.
|
π |
2 |
f(x) |
sinx |
π |
2 |
f′(x)sinx-f(x)cosx |
sin2x |
f(x) |
sinx |
π |
2 |
π |
6 |
π |
3 |
f(
| ||
sin
|
f(
| ||
sin
|
f(
| ||
|
f(
| ||||
|
3 |
π |
6 |
π |
3 |
A.-log20132012 | B.-1 |
C.(log20132012)-l | D.1 |
A.f(1)<ef(0),f(2013)>e2013f(0) | B.f(1)>ef(0),f(2013)>e2013f(0) |
C.f(1)>ef(0),f(2013)<e2013f(0) | D.f(1)<ef(0),f(2013)<e2013f(0) |
1 |
3 |
2t+1 |
3 |
A.必为正数 | B.必为负数 | C.必为非负 | D.必为非正 |
A.3 | B.-3 | C.4 | D.-4 |
π |
6 |
π |
3 |
A.1 | B.0 | C.
| D.
|
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