题目
已知函数y＝sin(x+
)cos(x+
)
| π |
| 6 |
| π |
| 6 |
提问时间：2020-10-15
答案
∵y＝sin(x+
)cos(x+
)=
sin(2x+
)
∴T=
＝π，排除A，B
令x=
代入y=
sin(2x+
)得y=
| π |
| 6 |
| π |
| 6 |
| 1 |
| 2 |
| π |
| 3 |
∴T=
| 2π |
| 2 |
令x=
| π |
| 6 |
| 1 |
| 2 |
| π |
| 3 |
| π |
| 6 |
| π |
| 6 |
提问时间：2020-10-15
| π |
| 6 |
| π |
| 6 |
| 1 |
| 2 |
| π |
| 3 |
| 2π |
| 2 |
| π |
| 6 |
| 1 |
| 2 |
| π |
| 3 |