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How do you know what values to exclude from the domain?

User Roma
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1 Answer

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19 votes

Answer:

To find these x values to be excluded from the domain of a rational function, equate the denominator to zero and solve for x . For example, the domain of the parent function f(x)=1x is the set of all real numbers except x=0

Explanation:

User Pavel Koryagin
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