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\begin{document}
\section|{ΞΟΞΊΞ·ΟΞ· ΟΞ±ΟΞ±Ξ³ΟΞ³ΟΞ½}
ΞΞ± ΟΟΞΏΞ»ΞΏΞ³ΞΉΟΟΞ΅Ξ― Ξ· ΟΞ±ΟΞ¬Ξ³ΟΞ³ΞΏΟ ΟΞ·Ο ΟΟΞ½Ξ¬ΟΟΞ·ΟΞ·Ο:
\begin{equation}
         f(x)=x^3+2x^2-5x+3
\end{equation}
\subsection*{ΞΟΟΞ·}
Ξ§ΟΞ·ΟΞΉΞΌΞΏΟΞΏΞΉΞΏΟΞΌΞ΅ ΟΞΏΟΟ ΞΊΞ±Ξ½ΟΞ½Ξ΅Ο ΟΞ±ΟΞ±Ξ³ΟΞ³ΞΉΟΞ·Ο:
\begin{align}
        f'(x)&amp;=\frac{d}{dx}(x^3)+\frac{d}{dx}(2x^2)
        -\frac{d}{dx}(5x)+\frac{d}{dx}(3)\\
        &amp;=3x^2+4x-5+0
\end{align} 
\end{document}
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