We had a good time by the lake last Sunday.(改为一般疑问句)_1 you _2 a good time by the lake last Sunday?

题干

We had a good time by the lake last Sunday.(改为一般疑问句)

____ you ____ a good time by the lake last Sunday?

上一题下一题 0.0难度选择题更新时间:2018-07-24 11:37:19

Did,have

已知函数f（x）=2sin²x+sinx•cosx+cos²x，x∈R．求：

（1）f（ $\frac{π}{12}$ ）的值；

（2）函数f（x）的最小值及相应x值；

（3）函数f（x）的递增区间．

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