SOLUTION: Let the function f be defined by the equation y = f(x), where x and f(x) are real numbers. Find the domain of the function. (Enter your answer using interval notation.) f(x) =

Question 843835: Let the function f be defined by the equation
y = f(x),
where x and
f(x)
are real numbers. Find the domain of the function. (Enter your answer using interval notation.)
f(x) = x^2-49
The x^2-49 is supossed to be in a square root but my computer will not let me type the square root
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
You can type sqrt(x^2 - 49) or surround your formula in triple curly braces or use TeX input, e.g.

. The domain of f(x) is the set where the expression inside the sqrt is non-negative, i.e. (-infty, -7] U [7, infty).
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