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12. ν¨μ \( f(x) = \frac{1}{9} x (x - 6)(x - 9) \)μ μ€μ \( t \ (0 < t < 6) \)μ λνμ¬ ν¨μ \( g(x) \)λ \[ g(x) = \begin{cases} f(x) & (x < t) \\ -(x - t) + f(t) & (x \geq t) \end{cases} \] μ΄λ€. ν¨μ \( y = g(x) \)μ κ·Έλνμ \( x \)μΆμΌλ‘ λλ¬μΈμΈ μμμ λμ΄μ μ΅λκ°μ? [4μ ] \begin{itemize} \item[1] \(\frac{125}{4}\) \item[2] \(\frac{127}{4}\) \item[3] \(\frac{129}{4}\) \item[4] \(\frac{131}{4}\) \item[5] \(\frac{133}{4}\) \end{itemize} |