π |
6 |
∴f(x)=
| ||
2 |
1 |
2 |
=(
| ||
2 |
1 |
2 |
=sin(2x−
π |
6 |
∵T=
2π |
2 |
(2)当2x−
π |
6 |
π |
2 |
即x=kπ+
2π |
3 |
因此f(x)取最大值时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)的单调增区间为[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 |