| 1−2sinx |
| 1+2sinx |
| 1 |
| 2 |
| 1 |
| 2 |
| π |
| 6 |
| π |
| 6 |
∴f(-x)=log2
| 1+2sinx |
| 1−2sinx |
| 1−2sinx |
| 1+2sinx |
| 1−2sinx |
| 1+2sinx |
∴故其为奇函数;
(2)由上得:定义域(2kπ−
| π |
| 6 |
| π |
| 6 |
∵
| 1−2sinx |
| 1+2sinx |
| −(1+2sinx)+2 |
| 1+2sinx |
| 2 |
| 1+2sinx |
而-
| 1 |
| 2 |
| 1 |
| 2 |
| 2 |
| 1+2sinx |
| 2 |
| 1+2sinx |
| 1−2sinx |
| 1+2sinx |
∴值域为R.
| 1−2sinx |
| 1+2sinx |
| 1−2sinx |
| 1+2sinx |
| 1 |
| 2 |
| 1 |
| 2 |
| π |
| 6 |
| π |
| 6 |
| 1+2sinx |
| 1−2sinx |
| 1−2sinx |
| 1+2sinx |
| 1−2sinx |
| 1+2sinx |
| π |
| 6 |
| π |
| 6 |
| 1−2sinx |
| 1+2sinx |
| −(1+2sinx)+2 |
| 1+2sinx |
| 2 |
| 1+2sinx |
| 1 |
| 2 |
| 1 |
| 2 |
| 2 |
| 1+2sinx |
| 2 |
| 1+2sinx |
| 1−2sinx |
| 1+2sinx |