SOLUTION: Please show work. Consider the function f(x)=√(x^2-1) What is the domain for f(x)?

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Question 1021198: Please show work.
Consider the function
f(x)=√(x^2-1)
What is the domain for f(x)?
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
f%28x%29=sqrt%28x%5E2-1%29
domain will start with the values of x that make x%5E2-1=0
x%5E2=1->x=1 or x=-1 and go right and left from these values including these values
so, domain is:
{ x element R : x%3C=-1 or x%3E=1 }