SOLUTION: state the domain for the function y=f(x)=(sqrtx^2-9)

SOLUTION: state the domain for the function y=f(x)=(sqrtx^2-9)

Algebra.Com

Question 115061: state the domain for the function
y=f(x)=(sqrtx^2-9)
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Since you cannot take the square root of a negative number, set the inner expression greater than zero

Now if you graph

we can see that the graph is greater than zero when or

So the domain of is

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