题目
若f(x)＝asin(x+
)+3sin(x−
)
| π |
| 4 |
| π |
| 4 |
提问时间：2021-01-04
答案
f(x)＝asin(x+
)+3sin(x−
)＝a(
| π |
| 4 |
| π |
| 4 |
|