A:That’s all right
B:I don’t believe you
C:How dare you say that
D:Sorry, but that’s no excuse
已知命题p:∃x∈R,x>sinx,则p的否定形式为( )
已知f(x)=sin(ωx+π3)(ω>0)的最小正周期为π.
(1)求在(0,π2)内一条对称轴;
(2)求在(0,2π内的零点.