SOLUTION: What is the natual domain for the function: f(x)= √x^2-9

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Question 75040This question is from textbook Algebra: An Integrated Approach
: What is the natual domain for the function:
f(x)= √x^2-9 This question is from textbook Algebra: An Integrated Approach

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
What is the natual domain for the function:
f(x)= √x^2-9
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The x^2-9 must be greater than or equal to zero.
x^2-9>=0
x^2>=9
x<=-3 or x>=3
That is the domain of the function.
The "or" is an inclusive or.
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Cheers,
Stan H.