4月20日我发现了一个几乎没用但好看的公式

a∈(-∞,0)∪(0,+∞),b,x∈R,则

(a^(b/x))/((a^(b/x))+√a) + (a^(x-b/x))/((a^(x-b/x))+√a) = 1

证法简单,直接通分

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