求函数y=tan(3x-π/3)的定义域、值域、并指出它的周期性、奇偶性、单调性...我算的是：定义域(x"竖线"x∈R,x≠5π/18+kπ/3, k∈Z),值域R,周期是π/3,奇函数,在(-5π/18+kπ/3,5π/18+kπ/3).谁看下哪不对?答

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