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4. ν¨μ \[ f(x) = \begin{cases} 3x - a & (x < 2) \\ x^2 + a & (x \geq 2) \end{cases} \] κ° μ€μ μ 체μ μ§ν©μμ μ°μμΌ λ, μμ $a$μ κ°μ? [3μ ] \begin{itemize} \item[1] 1 \item[2] 2 \item[3] 3 \item[4] 4 \item[5] 5 \end{itemize} |