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carnot-1.tex
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carnot-1.tex
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\documentclass{standalone}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}[scale=2]
\draw[->](-0.5,0)--(3.5,0)node[above]{$V$};
\draw[->](0,-0.5)--(0,2)node[right]{$p$};
\draw[->,ultra thick]plot[smooth, domain=0.5:1.5](\x,{0.7+1/(\x+0.5)});
\draw[-,ultra thick]plot[smooth, domain=1.5:2.5](\x,{0.7+1/(\x+0.5)});
\draw[->,ultra thick]plot[smooth, domain=2.5:2.75](\x,{0.03+1/(\x-1.5)^2});
\draw[-,ultra thick]plot[smooth, domain=2.75:3](\x,{0.03+1/(\x-1.5)^2});
\draw[-,ultra thick]plot[smooth, domain=1:2](\x,{0.27+0.6/(\x)});
\draw[<-,ultra thick]plot[smooth, domain=2:3](\x,{0.27+0.6/(\x)});
\draw[<-,ultra thick]plot[smooth, domain=0.75:1](\x,{0.31+1/(\x+0.34)^2});
\draw[-,ultra thick]plot[smooth, domain=0.5:0.75](\x,{0.31+1/(\x+0.34)^2});
\node[above]at(0.5,1.7){$A$};
\node[above]at(2.5,1.03){$B$};
\node[right]at(3,0.474){$C$};
\node[below]at(1,0.87){$D$};
\end{tikzpicture}
\end{document}