KoreanSAT / data /json /2025 /math_7.txt
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7. λ‹€ν•­ν•¨μˆ˜ $f(x)$κ°€ λͺ¨λ“  μ‹€μˆ˜ $x$에 λŒ€ν•˜μ—¬
\[
\int_{0}^{x} f(t) \, dt = 3x^3 + 2x
\]
λ₯Ό λ§Œμ‘±μ‹œν‚¬ λ•Œ, $f(1)$의 값은? [3점]
\begin{itemize}
\item[1] 7
\item[2] 9
\item[3] 11
\item[4] 13
\item[5] 15
\end{itemize}