知乎，中文互联网高质量的问答社区和创作者聚集的原创内容平台，于 2011 年 1 月正式上线，以「让人们更好的分享知识、经验和见解，找到自己的解答」为品牌使命。知乎凭借认真、专业. 自然常数 e 确实是一个奇妙的数字，这里的 e 并不仅仅是一个字母，它还代表数学中的一个 无理常数，约等于 2.718281828459 。 但为啥一个无理数却被人们称之为“ 自然常数 ”？ 说到 e ，.
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