Question

如图是函数y=2sin(ωx+φ)(|φ|＜)的图象,那么（    ）

A.ω=,φ=                          B.ω=,φ=-

C.ω=2,φ=                            D.ω=2,φ=-

Answer 1

C

解析：如T=-(-)=π,∴ω=2,排除A、B，令x=0,则y=2sinφ＞0.故排除D，选C.