a |
x |
2 |
1 |
2 |
b |
| ||
2 |
x |
2 |
a |
b |
a |
x |
2 |
1 |
2 |
b |
| ||
2 |
x |
2 |
a |
b |
x |
2 |
1 |
2 |
| ||
2 |
x |
2 |
| ||
2 |
x |
2 |
1 |
2 |
x |
2 |
x |
2 |
π |
6 |
2π | ||
|
x |
2 |
π |
6 |
x |
2 |
π |
6 |
π |
2 |
4π |
3 |
2π |
3 |
4π |
3 |
2π |
3 |
2π |
3 |
α |
3 |
β |
α |
β |
3 |
π |
2 |
π |
6 |
π |
3 |
BC |
AB |
A.y=cos4x | B.y=sin2x | C.y=sin
| D.y=cos
|
3 |
OA |
OB |
3 |
π |
2 |
2π |
3 |
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