关键术语第 10 章:指数和对数函数
- Page ID
- 204117
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| 字数 | 定义 | 图片 | 字幕 | 链接 | 来源 |
|---|---|---|---|---|---|
| 常见的对数函数 | 该函数\(f(x)=\log{x}\)是 base10 的常见对数函数,其中\(x>0\)。 \[y=\log{x} \text{ is equivalent to } x=10^y\] | ||||
| 对数函数 | 该函数\(f(x)=\log_a{x}\)是以基数、其中\(a\)\(a>0\)\(x>0\)、和为基数的对数函数\(a≠1\)。 \[y=\log_a{x} \text{ is equivalent to } x=a^y\] | ||||
| 自然对数函数 | 该函数\(f(x)=\ln(x)\)是带有底数的自然对数函数\(e\),其中\(x>0\)。 \[y=\ln{x} \text{ is equivalent to } x=e^y\] | ||||
| 渐近线 | 一条直线,函数的图形靠得很近,但从不接触。 | ||||
| 指数函数 | 指数函数,其中\(a>0\) and 是以下形式的函数\(f(x)=a^x\)。\(a≠1\) | ||||
| 天然基础 | 该数字\(e\)被定义为的值\((1+\frac{1}{n})^n\),因为值\(n\)越来越大。 我们说,随着无限\(n\)增长,\(e≈2.718281827...\) | ||||
| 自然指数函数 | 自然指数函数是一个指数函数,其基数为\(e\):\(f(x)=e^x\)。 域为\((−∞,∞)\),范围为\((0,∞)\)。 | ||||
| 一对一功能 | 如果范围中的每个值在域中恰好有一个元素,则函数是一对一的。 对于函数中的每个有序对,每个\(y\)-value 仅与一个\(x\)-value 匹配。 |


