A.k•180°-30°,k∈Z | B.k•180°+30°,k∈Z |
C.k•360°-30°,k∈Z | D.k•360°+30°,k∈Z |
3 |
2 |
| ||
2 |
(
|
3 |
| ||||
|
1 |
2 |
A.函数y=f(x)•g(x)的最小正周期为2π | ||
B.函数y=f(x)•g(x)的最大值为1 | ||
C.将函数y=f(x)的图象向右平移
| ||
D.将函数y=f(x)的图象向左平移
|
3 |
A.f(x)=sinx•cosx | B.g(x)=tan(x+
| ||
C.f(x)=sin2x-cos2x | D.ϕ(x)=sinx+cosx |
π |
2 |
π |
2 |
π |
12 |
π |
6 |
π |
3 |
A.y=2cos2πx-1 | B.y=sin2πx+cos2πx | ||
C.y=tan
| D.y=sinπx•cosπx |
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