已知函数f（x）=sin（2x+φ），其中φ为实数，若f（x）≤|f（ π6 ）|对x∈R恒成立，且f（ π2 ）＞f（π），则f（x）的单调递增区间是

题干

已知函数f（x）=sin（2x+φ），其中φ为实数，若f（x）≤|f（ π

6

）|对x∈R恒成立，且f（ π

2

）＞f（π），则f（x）的单调递增区间是（）

A：kπ﹣ $\frac{π}{3}$ ，kπ+ $\frac{π}{6}$ （k∈Z）

B：kπ，kπ+ $\frac{π}{2}$ （k∈Z）

C：kπ+ $\frac{π}{6}$ ，kπ+ $\frac{2 π}{3}$ （k∈Z）

D：kπ﹣ $\frac{π}{2}$ ，kπ（k∈Z）

上一题下一题 0.0难度选择题更新时间:2018-01-11 06:39:57

答案(点此获取答案解析）

C

同类题2

短文改错

One day, little Tony went to a shopping center with his parent. It was very crowded. Tony saw a toy on a shop window. He liked it so very much that he quickly walked into the shop. After looks at the toy for some time, he turned around and found where his parents were missing. Tony was scared and begun to cry. A woman saw him crying and telling him to wait outside a shop. Five minutes later, Tony saw parents. Mom said, “How nice to see you again! Dad and I were terrible worried.” Tony promised her that this would never happen again.

题干

答案(点此获取答案解析）

同类题1

同类题2

同类题3

同类题4

同类题5