π |
4 |
π |
2 |
A.[
| B.[
| C.(0,
| D.(0,2] |
π |
4 |
2kπ |
ω |
π |
4ω |
2kπ |
ω |
3π |
4ω |
π |
4ω |
3π |
4ω |
π |
4 |
π |
2 |
|
1 |
2 |
3 |
4 |
3 |
4 |
3 |
4 |
sin2x+cos2x+1 |
2cosx |
π |
4 |
π |
4 |
3
| ||
5 |
π |
2 |
π |
2 |
| ||
2 |
A.2sinx | B.2cosx | C.-2sinx | D.-2cosx |
π |
3 |
A.x=
| B.x=
| C.x=
| D.x=
|
A.x=
| B.x=
| C.x=-
| D.x=-
|
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