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Meehan98
 one year ago
Identify the inverse of f(x) = x^2 − 4. Determine whether it is a function and state its domain and range. I know that it's not a function because of the horizontalline test, but I don't know how to find the domain and range!
Meehan98
 one year ago
Identify the inverse of f(x) = x^2 − 4. Determine whether it is a function and state its domain and range. I know that it's not a function because of the horizontalline test, but I don't know how to find the domain and range!

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thomas5267
 one year ago
Best ResponseYou've already chosen the best response.1Let \(f^{1}(x)\) denote the inverse of \(f(x)\). The domain of \(f(x)\) is the range of \(f^{1}(x)\). The range of \(f(x)\) is the domain of \(f^{1}(x)\). The domain of a function is the set of numbers such that the output of that function (i.e. range) is real numbers (at least for now, things get more complex as you learn). The range of a function is the set of outputs of the function. For example, the \(f(x)\) has domain of \(\mathbb{R}\) (real numbers) since for every real number you put into the function you will get a real number out. The range of \(f(x)\) is \([4,\infty )\) since the smallest output \(f(x)\) can get is 4 (corresponding to x=0) and there is no upper limit on how big \(f(x)\) can get.

Meehan98
 one year ago
Best ResponseYou've already chosen the best response.0Okay, thanks for your help! I will have to do a little bit more research because this seems very difficult.
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