How to calculate the domain and range of this function.

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mathstudent95

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f(x) = √(x² - 49)
I am having difficulties with this one. Can someone please help me with calculating both the domain and range of this square root function?
Thanks!:)
 
mathstudent95 said:
f(x) = √(x² - 49)
I am having difficulties with this one. Can someone please help me with calculating both the domain and range of this square root function?
Click to expand...
The domain is \(\displaystyle (-\infty,-7]\cup[7,\infty)\)
You tell us the range.
 
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