A:YYRR
B:BB
C:AaBB
D:aa
— What did the farmer do ________the farm?
— He_______ the chickens.
已知f(x)=Asin(ωx+φ),(A>0,ω>0,0<φ<π)的图象的一部分如图所示,则f(x)解析式是( )