A.最小正周期为2π的偶函数 |
B.最小正周期为2π的奇函数 |
C.最小正周期为π的偶函数 |
D.最小正周期为π的奇函数 |
1-cos2x |
2 |
1 |
2 |
1 |
2 |
2π |
2 |
π |
3 |
A.y=sin(
| B.y=sin(2x+
| C.y=sin|x| | D.y=sin(2x-
|
π |
3 |
π |
6 |
π |
3 |
A.y=sin(
| B.y=cos(
| C.y=cos(2x+
| D.y=sin(2x-
|
π |
6 |
x |
2 |
3 |
π |
12 |
π |
12 |
A.
| B.
| C.π | D.2π |
θ |
2 |
θ |
2 |
θ |
2 |
θ |
2 |
A.a<-1 | B.a>-1 | C.a≤-3 | D.a≥-3 |
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