7 lblPreambule := "\usepackage[frenchb]{babel}" &
8 "\usepackage[garamond]{mathdesign}" &
9 "\usepackage{amsmath}";
17 vardef r(expr t) = 4*cos(t/3)*cos(t/3)*cos(t/3) enddef;
19 vardef rp(expr t) = (r(t)*cos(t),r(t)*sin(t)) enddef;
21 def traceDoubleVecteur(expr o,d)= drawdblarrow ((o-d)--(o+d)) gddEnPlace enddef;
23 def avecCrayon(expr t,c) = withpen pencircle scaled t withcolor c enddef;
26 a = arccos(1/sqrt(3));
36 Graduations; Unites(1);
38 drawoptions(withcolor Gainsboro);
41 trace CourbeEnPolaires(r,0,3Pi,450)
42 avecCrayon(1.5,Crimson);
44 drawoptions(withcolor LightGoldenrod);