Find the domain of the function. $f(x) = \frac{x^2}{x^2 + 2}$ The domain is $\boxed{}$. (Type your answer in interval notation.)
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The domain of a function is the set of all possible input values (x-values) for which the function is defined. In this case, the function is a rational function (a fraction). Rational functions are undefined when the denominator is equal to zero. Show more…
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