a |
1 |
2 |
b |
3 |
a |
b |
π |
2 |
a |
b |
1 |
2 |
3 |
3 |
1 |
2 |
π |
6 |
2π |
2 |
π |
2 |
π |
6 |
π |
6 |
5π |
6 |
π |
6 |
5π |
6 |
1 |
2 |
π |
6 |
1 |
2 |
1 |
2 |
π |
2 |
1 |
2 |
a |
3 |
b |
a |
b |
c |
c |
| ||
2 |
1 |
2 |
3 |
m |
n |
A.y=2cos2πx-1 | B.y=sin2πx+cosπx | ||||
C.y=tan(
| D.y=sinπxcosπx |
a |
b |
π |
6 |
A.函数f(x)的最小正周期为2π | ||
B.函数f(x)的图象关于直线x=
| ||
C.函数f(x)的图象是由y=2cos2x的图象向左平移
| ||
D.函数f(x+
|
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