“微信扫一扫”进入题库练习及模拟考试
已知函数
A.\(ω=\frac {1} {4}\)
B.\(f\left ( {x} \right )\)的图象的对称轴方程为\(x=4k\pi +\frac {\pi } {4}\left ( {k\in Z} \right )\)
C.\(f\left ( {x} \right )\)的图象的单调递增区间为\(\left [ {k\pi -\frac {\pi } {16},k\pi +\frac {\pi } {16}} \right ]\left ( {k\in Z} \right )\)
D.\(f\left ( {x} \right )\geq -1\)的解集为\(\left [ {\frac {k\pi } {2}-\frac {5\pi } {48},\frac {k\pi } {2}+\frac {11\pi } {48}} \right ]\left ( {k\in Z} \right )\)
参考答案:D