题目内容
函数y=cosx+cos(x+
)的最大值是
______.
| π |
| 3 |
∵y=cosx+cos(x+
)=cosx+
cosx-
sinx
=
cosx-
sinx=
cos(x+
)
故y=cosx+cos(x+
)的最大值是
故答案为:
| π |
| 3 |
| 1 |
| 2 |
| ||
| 2 |
=
| 3 |
| 2 |
| ||
| 2 |
| 3 |
| π |
| 6 |
故y=cosx+cos(x+
| π |
| 3 |
| 3 |
故答案为:
| 3 |
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