π |
6 |
∴f(x)=
| ||
2 |
1 |
2 |
=(
| ||
2 |
1 |
2 |
=sin(2x?
π |
6 |
∵T=
2π |
2 |
(2)當(dāng)2x?
π |
6 |
π |
2 |
即x=kπ+
2π |
3 |
因此f(x)取最大值時(shí)x的集合是{x|x=kπ+
2π |
3 |
(3)f(x)=sin(2x?
π |
6 |
再由2kπ?
π |
2 |
π |
6 |
π |
2 |
解得kπ?
π |
6 |
π |
3 |
所以y=f(x)的單調(diào)增區(qū)間為[kπ?
π |
6 |
π |
3 |
π |
6 |
π |
6 |
| ||
2 |
1 |
2 |
| ||
2 |
1 |
2 |
π |
6 |
2π |
2 |
π |
6 |
π |
2 |
2π |
3 |
2π |
3 |
π |
6 |
π |
2 |
π |
6 |
π |
2 |
π |
6 |
π |
3 |
π |
6 |
π |
3 |