3 |
A.φ=2kπ-
| B.φ=kπ-
| ||||
C.φ=2kπ-
| D.φ=kπ-
|
3 |
π |
3 |
π |
3 |
π |
3 |
π |
3 |
π |
4 |
A.y=sin(2x-
| B.y=-sin2x | C.y=-cos2x | D.y=cos2x |
π |
12 |
7π |
12 |
A.y=4sin(2x+
| B.y=-4sin(2x+
| ||||
C.y=4sin(4x+
| D.y=-4sin(4x+
|
3 |
A.向右平移
| B.向右平移
| ||||
C.向左平移
| D.向左平移
|
π |
4 |
3 |
π |
6 |
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