2π |
3 |
A.(-
| B.(-
| C.(-
| D.(-
|
2π |
3 |
2π |
3 |
2π |
3 |
2π |
3 |
1 |
2 |
| ||
2 |
s1n4x+cos4x+s1n2xcos2x |
2-s1n2x |
π |
4 |
π |
4 |
cos160°-cos170° |
tan155° |
a |
x |
2 |
x |
2 |
π |
4 |
b |
2 |
x |
2 |
π |
4 |
x |
2 |
π |
4 |
a |
b |
π |
2 |
A.f(x)是周期为1的奇函数 |
B.f(x)是周期为2的偶函数 |
C.f(x)是周期为1的非奇非偶函数 |
D.f(x)是周期为2的非奇非偶函数 |
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