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\input{preamble-standalone.ltx}
\begin{document}
% Ex. No. 69 (Section 14.7.4 : Troisième courbe $ b=32/27$ )
\begin{tikzpicture}[scale=1.2]
\tkzInit[xmin=0,xmax=10,ymax=.35,ystep=0.05];
\tkzAxeXY
\tkzGrid(0,0)(10,.35)
\tkzFct[color = red,
domain =1.185:10]{(2*(\x-32./27)*(\x-32./27))/(\x*\x*\x)}
\tkzDrawTangentLine[draw,color=blue,kr=2,kl=2](3.555)
\tkzText[draw,fill = brown!30](5,0.3)%
{$g(v)=2\dfrac{\left(v-\dfrac{32}{27}\right)^2}{v^3}$}
\end{tikzpicture}
\end{document}
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