Math Problem Statement
2.函数的定义域和值域是什么？
Solution
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Math Problem Analysis
Mathematical Concepts
Set Theory
Function Analysis
Formulas
Definition of Domain: D(f) = {x | f(x) is defined}
Definition of Range: R(f) = {f(x) | x in D(f)}
Theorems
Theorem of Function Values
Suitable Grade Level
Grades 9-12