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Band2/Grafiken/B2_12.tikz

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+\begin{tikzpicture}[line cap=round,line join=round,>=triangle 45,x=1cm,y=1cm]
+\begin{axis}[
+x=1cm,y=1cm,
+axis lines=middle,
+xmin=-5,
+xmax=5,
+ymin=-1.4,
+ymax=5,
+ytick={-1,...,4},
+xtick={-3,...,3},
+xlabel=$x$,
+ylabel=$y$,
+]
+
+
+\addplot[domain=0.5:4, blue, line width=1,samples=50] {1/(x^2)};
+\addplot[domain=-4:-0.5, blue, line width=1,samples=50] {1/(x^2)};
+
+\node[] at (axis cs:2.5,2.5) {$\displaystyle y=\frac{1}{x^2}\; (x \neq 0)$};
+\end{axis}
+
+
+
+\end{tikzpicture}