设函数f(x)=2+sin(3x+π/12)cos(x+π/6)+cos(3x+π/12)sin(x+π/6)1.求函数f(x)的图像离原点O最近9对称中心的坐标,以及离y轴最近的对称轴的方程2.求函数f(x)的最小正周期,并用作图法求方程f(x)-x-1=0的根的个
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