Loading [MathJax]/extensions/MathMenu.js
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\begin{tikzpicture}
\tkzTabInit[lgt=4,espcl=3]{$n$/1,$2n^2-2n+4$/1,
$4n(n-1)$/1,$\dfrac{2n^2-2n+4}{4n(n-1)}$
/2}{$0$,$1$,$+\infty$}
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LaTeX

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