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\begin{document}

\title{Episode 16 -- Points and line equations}
\subtitle{European section, season 01}
\date{}

\begin{frame}
  \titlepage
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\begin{frame}{Fifteen equations}

\large 

\begin{center}
\begin{tabular}{ccc}
$x^2+y^2-1=0$ & $3x-y+2=0$ & $2x^2+y=0$ \\[15pt]
$xy=6$  & $-x+4y=0$ & $y-\sqrt{x}=2$ \\[15pt]
$x+y=7$ & $\sqrt{x+2}=6$ & $-3x-y-7=0$ \\[15pt]
$x^2-y^2=5$ & $-\frac{x}{2}-2y=0$ & $-\frac{4}{x}-2y=0$ \\[15pt]
$-2x^2-y-7=0$ & $\frac{1}{x}+\frac{1}{y}=0$ & $-x-y+1=0$ \\
\end{tabular}
\end{center}


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\end{document}
