The domain of $y=\sqrt{x^{2}-9}$ is

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The domain of $y=\sqrt{x^{2}-9}$ is

E

Editor

Sep 18, 2022

The domain of $y=\sqrt{x^{2}-9}$ is

Difficulty: Easy

A:

R

B:

(0, +\propto)

C:

(-\infty, -3) U (3, +\infty)

D:

(0, \infty)

ID: 63273db8ca83163ac3a103e3