A problem by Lorenc Bushi

Level pending

\(f(x)\) is a function defined for all real values of \(x\) and \(x\) not \(0\).If \(f(x)\) satisfies the equation:

\(f(\frac{1}{x})\)+\(2f(x)\)=\(x\),

find \(2f'(1)\).

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