How to Find Domain and Range of a Rational Function

How to find the domain and the range of a rational function?

In this precalculus tutorial, we will find the domain and the range of the rational function f(x)=(x^2-2x-3)/(4x-12). This is a kind of tricky question because many students will just cancel out the common factor and make a mistake on the range of the function. Be careful! Shop my math t-shirts & hoodies on Amazon: 👉 https://amzn.to/3qBeuw6 ...

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