V2EX exponent

Exponent

定义 Definition

exponent(名词)常指“指数”:表示一个数要自乘多少次的数字(如 \(2^3\) 中的 3)。在更广义的语境中,也可指“倡导者/代表人物”(较次常见)。

发音 Pronunciation

/ksponnt/

例句 Examples

The exponent tells you how many times to multiply the base by itself.
指数告诉你底数要自乘多少次。

In scientific notation, changing the exponent shifts the decimal point and changes the scale of the number.
在科学记数法中,改变指数会移动小数点并改变数字的量级。

词源 Etymology

来自拉丁语 exponere(“展示、提出”),经由中古法语与早期英语演变而来。其核心含义与“把某种信息明确呈现出来”有关:在数学里,“指数”用来清楚地“标示”幂运算的次数;在一般语义中也可引申为“阐释者、倡导者”。

相关词 Related Words

文学作品 Literary Works

  • Herman MelvilleMoby-Dick》中出现过 exponent 的一般义用法(指“代表/倡导者”)。
  • Mary ShelleyFrankenstein》中亦可见 exponent 的一般义用法(指“阐述者/代表人物”)。
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