3 |
3 |
1 |
2 |
| ||
2 |
π |
3 |
∵ω=2,∴函數(shù)f(x)的最小正周期是
2π |
2 |
當(dāng)-
π |
2 |
π |
3 |
π |
2 |
即-
π |
12 |
5π |
12 |
當(dāng)
π |
2 |
π |
3 |
3π |
2 |
即
5π |
12 |
11π |
12 |
則函數(shù)f(x)的單調(diào)遞增區(qū)間[-
π |
12 |
5π |
12 |
單調(diào)減區(qū)間為[
5π |
12 |
11π |
12 |
3 |
3 |
3 |
3 |
1 |
2 |
| ||
2 |
π |
3 |
2π |
2 |
π |
2 |
π |
3 |
π |
2 |
π |
12 |
5π |
12 |
π |
2 |
π |
3 |
3π |
2 |
5π |
12 |
11π |
12 |
π |
12 |
5π |
12 |
5π |
12 |
11π |
12 |