下列四个函数中，与y=x表示同一函数的是

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下列四个函数中，与y=x表示同一函数的是（）

A：y= $\sqrt{x}$

B： $y = \frac{x^{2}}{x}$

C： $y = \sqrt{x^{2}}$

D： $y = \sqrt[3]{x^{3}}$

上一题下一题 0.0难度选择题更新时间:2019-04-10 09:14:55

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