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22. μ΅κ³ μ°¨νμ κ³μκ° 1μΈ μΌμ°¨ν¨μ \( f(x) \)κ° λ€μ 쑰건μ λ§μ‘±μν¨λ€. \[ \boxed{ \begin{array}{c} \text{ν¨μ } f(x) \text{μ λνμ¬} \\ f(k-1)f(k+1) < 0 \\ \text{μ λ§μ‘±μν€λ μ μ } k \text{λ }\underline{\text{μ‘΄μ¬νμ§ μλλ€.}} \end{array} } \] \[ f'\left( -\frac{1}{4} \right) = -\frac{1}{4}, \quad f'\left( \frac{1}{4} \right) < 0 \text{μΌ λ,} \quad f(8) \text{μ κ°μ ꡬνμμ€. [4μ ]} \] |