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e 的存在，使得 e^{x} 是求导运算的不动点。-----有了数字 e, 并定义了它的指数，对数是指数的反函数。以 e 为底数，我们可以定义对数函数。 \ln (x) PS: 在定义 ln(x) 之前，已经说明了存在某个数字 e, 使得 e ^ x 的导数为自身。
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如需下载E管家，可以打开以下链接，点击get in store app，将会自动唤起Microsoft store进行下载 发布于 2022-11-21 09:18 赞同 1 1 条评论
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