A:①③
B:②④
C:②③
D:①②
观察如图,在下列四种图形变换中,该图案不包含的变换是( )
I saw him _______basketball with Jack an hour ago.
(Ⅰ)求f(x)的单调递增区间
(Ⅱ)若sin2x+af(x+ π6 )+1>6cos4x对任意x∈(﹣ π4 , π4 )恒成立,求实数a的取值范围.