how to find the range of rational functions like f(x) = [itex]\frac{1}{{x}^{2}-4}[/itex] algebraically , i graphed it and seen that (-1/4,0] can not be in range . generally i am interested in how to find the range of functions and rational functions in particular(adsbygoogle = window.adsbygoogle || []).push({});

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# Finding the range of rational functions algebraically

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