π |
3 |
1 |
2 |
A.y=sin(2x-
| B.y=sin(
| ||||||
C.y=sin(2x+
| D.y=sin(2x+
|
π |
3 |
π |
3 |
1 |
2 |
π |
3 |
a |
a |
A.(1,0) | B.(
| C.(
| D.(
|
2 |
2 |
π |
4 |
A.横坐标缩短到原来的
| ||||
B.横坐标缩短到原来的
| ||||
C.横坐标伸长到原来的2倍(纵坐标不变),再向左平行移动
| ||||
D.横坐标伸长到原来的2倍(纵坐标不变),再向右平行移动
|
π |
2 |
1 |
2 |
A.y=
| B.y=
| ||||||||||
C.y=
| D.y=
|
A.0,
| B.0,
| ||||||||||
C.0,π,2π,3π,4π | D.0,
|
π |
4 |
A.向左平移
| ||
B.向右平移
| ||
C.向左平移
| ||
D.向右平移
|
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