13 lines
453 B
Markdown
13 lines
453 B
Markdown
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---
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title: What Is the Domain of a Function
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localeTitle: 什么是函数的域
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---
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## 什么是函数的域
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函数的域是自变量的完整可能值集。换句话说,域是所有可能的x值的集合,它将使函数“工作”,并将输出实际的y值。
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例如,对于y = sqrt(x + 2) ,此函数的域为x> = -2 。
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#### 更多信息:
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[函数的域和范围](https://www.intmath.com/functions-and-graphs/2a-domain-and-range.php)
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