3 |
x |
2 |
π |
4 |
x |
2 |
π |
4 |
a |
π |
6 |
3 |
π |
2 |
x |
1 |
2 |
| ||
2 |
π |
3 |
a |
π |
6 |
π |
6 |
π |
6 |
π |
3 |
π |
6 |
π |
6 |
π |
6 |
7π |
6 |
π |
3 |
π |
3 |
π |
6 |
1 |
2 |
π |
6 |
π |
4 |
π |
4 |
A.f(0)=
| B.f(x)的最小正周期是2π | ||
C.f(x)有最大值 | D.f(x)有最小值 |
2x |
3 |
A.周期为π的奇函数 | B.周期为π的偶函数 |
C.周期为2π的奇函数 | D.周期为2π的偶函数 |
3 |
3 |
4 |
π |
2 |
π |
4 |
x |
2 |
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