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24. ๋งค๊ฐ๋ณ์ \( t(t > 0) \)๋ก ๋ํ๋ด์ด์ง ๊ณก์ \[ x = \ln(t^3 + 1), \quad y = \sin \pi t \] ์์ \( t = 1 \)์ผ ๋, \( \frac{dy}{dx} \)์ ๊ฐ์? [3์ ] \begin{itemize} \item[1] $-\frac{1}{3}\pi$ \item[2] $-\frac{2}{3}\pi$ \item[3] $-\pi$ \item[4] $-\frac{4}{3}\pi$ \item[5] $-\frac{5}{3}\pi$ \end{itemize} |