KoreanSAT / data /json /2022 /math_4.txt
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4. ν•¨μˆ˜ $( y = f(x) )$κ°€ λ‹€μŒκ³Ό 같이 μ •μ˜λ˜μ–΄ μžˆλ‹€.
\[
f(x) =
\begin{cases}
-x+2, & x < -1, \\
2, & x = -1, \\
(3*x+3)/2, & -1 < x < 1, \\
1, & 1 \leq x < 2, \\
3, & x = 2, \\
1, & x \geq 2.
\end{cases}
\]
\[ \lim_{x \to -1-} f(x) + \lim_{x \to 2} f(x) \text{의 값은? [3점]} \]
\begin{itemize} \item[1] 1 \item[2] 2 \item[3] 3 \item[4] 4 \item[5] 5 \end{itemize}