2TmjA6
Written on June 24, 2019
% Dans le préambule
% -----------------
\usepackage{pstricks-add}
% -----------------
\psset{unit=0.9cm}
\begin{pspicture*}(-3,-3)(3,3)
\psaxes[axesstyle=polar, labels=y,
labelFontSize=\scriptstyle](2,361)
\psplot[polarplot,algebraic,linewidth=2pt]
{0}{9.32}{3*cos(x/3)}
\end{pspicture*}