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Mathematics, 23.11.2019 03:31 nikejose11

Find all functions $f: \mathbb r \to \mathbb r$ that satisfy$$ f(x) + 3 f\left( \frac {x-1}{x} \right) = 7x $$for all nonzero $x$. note that the domain of $f$ is all real numbers. make sure you define your function everywhere!

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