Présentation de 8670.jps

/syracuse/bbgraf/tmp/8670.jpg
1 setxyrapport 25 setxunit 7.5 setborder 90 setangle_repere -5 5 setxrange -5 5 setyrange /quadrillagegray 0.4 def 1 setquadrillagexstep 1 setquadrillageystep quadrillage 1 1 settkstep .5 .5 setsubtkstep 2 2 setmkstep ticks subticks marks traceaxes axesarrow /R {settvar #rpn# cos(3*t) } def 0 20 pi mul settrange gsave .75 setlinewidth continu bleu (R) courbepolar grestore