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@Cellane
Created April 28, 2013 15:33
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\begin{tikzpicture}[scale=2]
\draw [help lines,step=0.25cm] (0,0) grid (6.2,1.2);
\draw (0,0) grid (6.25,1.25);
\foreach \x/\xtext in {1,2,3,4,5,6}
\draw[shift={(\x,0)}] (0pt,2pt) -- (0pt,-2pt) node[below] {$\xtext$};
\foreach \y/\ytext in {0.25,0.5,0.75,1}
\draw[shift={(0,\y)}] (2pt,0pt) -- (-2pt,0pt) node[left] {$\ytext$};
\draw[color=black] (0,0) parabola bend (0,0) (1,0.5);
\draw[color=black!75] (1,0.5) parabola bend (1.5,0.75) (2,0.5);
\draw[color=black!50] (2,0.5) parabola bend (3,0) (3,0);
\draw (1.5,1) node[anchor=center,draw=black!50,fill=white]{$N_{0,2}$};
\draw[color=red] (1,0) parabola bend (1,0) (2,0.5);
\draw[color=red!75] (2,0.5) parabola bend (2.5,0.75) (3,0.5);
\draw[color=red!50] (3,0.5) parabola bend (4,0) (4,0);
\draw (2.5,1) node[anchor=center,draw=black!50,fill=white]{$N_{1,2}$};
\draw[color=green] (2,0) parabola bend (2,0) (3,0.5);
\draw[color=green!75] (3,0.5) parabola bend (3.5,0.75) (4,0.5);
\draw[color=green!50] (4,0.5) parabola bend (5,0) (5,0);
\draw (3.5,1) node[anchor=center,draw=black!50,fill=white]{$N_{2,2}$};
\draw[color=blue] (3,0) parabola bend (3,0) (4,0.5);
\draw[color=blue!75] (4,0.5) parabola bend (4.5,0.75) (5,0.5);
\draw[color=blue!50] (5,0.5) parabola bend (6,0) (6,0);
\draw (4.5,1) node[anchor=center,draw=black!50,fill=white]{$N_{3,2}$};
\end{tikzpicture}
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