已知α∊(-π/2,π)若函数f(x)=cos(x+π/6+α)为奇函数,则函数y=sin(2x+a)在(0,π/3)上的对称轴是?∵f(x)=cos(x+π/6+α)为奇函数,∴π/6+α=-π/2；即α=-π/2-π/6=-2π/3；此时f(x)=cos(x-π/2)=cos(π/2-x)...