Please note- (https://youtu.be/PuCU1_p3Tfg) I referenced the left/right hand limit incorrectly for the definition in this text. In the case where sqrt(4-x^2) limit when x goes to 2, by definition, if the value x is going to is in the domain of the polynomial or rational function, then the limit is equal to the function defined at what x is going to. That is, as x goes to a, the limit goes to f(a).

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