Functions and Graphs - Functional Equations by Substitution

Functions and Graphs - Functional Equations by Substitution

The function \(y=\mathrm{f}\left( x \right)\), \(x\in \mathbb{R}\) satisfies

\(\mathrm{f}\left( x \right)-2\mathrm{f}\left( 4-x \right)={{x}^{2}}+1\) .

Determine a simplified expression for \(y=\mathrm{f}\left( x \right)\).

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Answer:\({-x^2 + \frac{16}{3}x + \frac{35}{3}}\)

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