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>> No.14823211 [View]
File: 3 KB, 246x63, negative-involution.png [View same] [iqdb] [saucenao] [google]
14823211

I'm looking for a real function that has this property, but I can't find any.

Obviously, it's very easy to find a complex function that satisfies this property, namely: f(x) = ix. But I'm interested in a solution that's restricted to real numbers only.

Any ideas?

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