E773Fw
Written on June 24, 2019
% Dans le préambule
% -----------------
\usepackage{pstricks-add}
% -----------------
\psset{xunit=0.25,yunit=2}
\begin{pspicture*}(-8,-0.5)(10,1.2)
\psaxes[trigLabels=true,dx=3.1416]
(0,0)(-7,-0.5)(10,1.2)
\psplot[algebraic]{-7}{-0.0001}{sin(x)/x}
\psplot[algebraic]{0.00001}{10}{sin(x)/x}
\end{pspicture*}