
noun:
 (mathematics) the collection of values regarding the separate variable that a function is defined
 (mathematics) the set of values of independent variable for which a function is defined
 (mathematics) the pair of values regarding the independent variable that a function is defined
 (math) the collection of values associated with independent variable that a function is defined
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Hypernym for "domain of a function"
 set
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How would you define domain of a function?