题目内容
函数y=(sinx-
cosx)(cosx-
sinx)+
的最小正周期为______.
| 3 |
| 3 |
| 3 |
∵y=(sinx-
cosx)(cosx-
sinx) +
=sinxcosx-
sin2x-
cos2x +3sinxcosx+
=4sinxcosx
=2sin2x
∴T=
=π
故答案为:π.
| 3 |
| 3 |
| 3 |
=sinxcosx-
| 3 |
| 3 |
| 3 |
=4sinxcosx
=2sin2x
∴T=
| 2π |
| 2 |
故答案为:π.
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