π |
2 |
A.
| B.4π,
| C.2π,
| D.4π,-
|
T |
4 |
3π |
2 |
π |
2 |
1 |
2 |
π |
2 |
1 |
2 |
π |
2 |
1 |
2 |
π |
2 |
π |
2 |
π |
4 |
π |
2 |
π |
4 |
π |
18 |
5π |
9 |
π |
6 |
π |
2 |
π |
3 |
A.y=cos(2x+
| B.y=cos(2x-
| ||||
C.y=cos(2x+
| D.y=cos(2x-
|
π |
6 |
π |
2 |
A.向左平移
| ||
B.向右平移
| ||
C.向左平移
| ||
D.向右平移
|
a |
π |
6 |
A.y=3sin(2x+
| B.y=3sin(2x-
| ||||
C.y=3sin(2x-
| D.y=3sin(2x+
|
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