| 2π |
| ω |
又由fmin（x）=-2可得A=2
∵f（x）的最低点为M（
| 2π |
| 3 |
∴sin（
| 4π |
| 3 |
∵0＜φ＜
| π |
| 2 |
∴
| 4π |
| 3 |
| 4π |
| 3 |
| 3π |
| 2 |
∴
| 4π |
| 3 |
| 3π |
| 2 |
∴φ=
| π |
| 6 |
∴f（x）=2sin（2x+
| π |
| 6 |
（2）∵0≤x≤
| π |
| 12 |
| π |
| 6 |
| π |
| 6 |
| π |
| 3 |
∴当2x+
| π |
| 6 |
| π |
| 6 |
| π |
| 6 |
当2x+
| π |
| 6 |
| π |
| 3 |
| π |
| 12 |
| π |
| 3 |
| 3 |
| π |
| 2 |
| 2π |
| 3 |
| π |
| 12 |
| 2π |
| ω |
| 2π |
| 3 |
| 4π |
| 3 |
| π |
| 2 |
| 4π |
| 3 |
| 4π |
| 3 |
| 3π |
| 2 |
| 4π |
| 3 |
| 3π |
| 2 |
| π |
| 6 |
| π |
| 6 |
| π |
| 12 |
| π |
| 6 |
| π |
| 6 |
| π |
| 3 |
| π |
| 6 |
| π |
| 6 |
| π |
| 6 |
| π |
| 6 |
| π |
| 3 |
| π |
| 12 |
| π |
| 3 |
| 3 |