State the domain of each function.

g(x) = sqrt (x^2 - 9)

I'm a little confused. Do I just need to plug in random numbers?

Question

State the domain of each function. 

g(x) = sqrt (x^2 - 9)

I'm a little confused. Do I just need to plug in random numbers?

anonymous · Answer

no graph it first https://www.desmos.com/calculator

jdoe0001 · Answer

the nick seems to say, " I like chicken fever"   not sure if that's something to look forward to, but who knows

anonymous · Answer

domain are the x values

anonymous · Answer

x values that are defined :)

anonymous · Answer

domain is all real numbers except -3<x>3

anonymous · Answer

domain is :
$$x^2-9 \ge0 \rightarrow |x|\ge3 \rightarrow x \in(-\infty,-3]\cup[3,\infty)$$

anonymous · Answer

or that

anonymous · Answer

the range is usually found by finding the domain of the inverse, however , in this question you can notice that the minimum occurs at x=0 which is -9 , and THE VALUE of function increases no matter where x goes , that is , the range is: $$[-9,\infty)$$

anonymous · Answer

Thank you.