3 |
π |
6 |
π |
3 |
1-cos2x |
2 |
3 |
3(1+cos2x) |
2 |
3 |
π |
6 |
2π |
2 |
π |
2 |
π |
6 |
π |
2 |
π |
3 |
π |
6 |
π |
6 |
π |
6 |
π |
3 |
π |
6 |
π |
6 |
5π |
6 |
π |
6 |
1 |
2 |
π |
4 |
A.向左平移
| ||
B.向右平移
| ||
C.向左平移
| ||
D.向右平移
|
π |
4 |
π |
4 |
π |
3 |
A.1 | B.2 | C.
| D.
|
π |
4 |
3π |
4 |
A.函数f(x)和g(x)的图象有一个交点在y轴上 | ||
B.函数f(x)和g(x)的图象在区间(0,π)内有3个交点 | ||
C.函数f(x)和g(x)的图象关于直线x=
| ||
D.函数f(x)和g(x)的图象关于原点(0,0)对称 |
3 |
π |
3 |
4π |
3 |
b |
a |
π |
4 |
A.-2cosx | B.2cosx | C.-2sinx | D.2sinx |
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