13.(2022春•安阳月考)已知函数f(x)=cos(ωx+φ)(ω>0)f(x)=\cos (\omega x+\varphi )(\omega >0)f(x)=cos(ωx+φ)(ω>0)的部分图象如图所示,则f(x)f(x)f(x)的单调递增区间为((( )))