题目

f(x)=sin(wx+φ) {w>0,|φ|

提问时间：2020-10-15

答案

f(x)=sin(wx+φ) {w>0,|φ|0,|φ|φ=π/6
∴f(x)=sin(2x+π/6)
2x+π/6=2kπ==>x=kπ-π/12；2x+π/6=2kπ+π==>x=kπ+5π/12；点对称
2x+π/6=2kπ-π/2==>x=kπ-π/3；2x+π/6=2kπ+π/2==>x=kπ+π/6；直线对称
显然选择C