Présentation de 2640.jps

/syracuse/bbgraf/tmp/2640.jpg
25 setxunit 7.5 setborder 90 setangle_repere -5 5 setxrange -5 5 setyrange 1 1 settkstep .5 .5 setsubtkstep 2 2 setmkstep ticks subticks marks traceaxes axesarrow /R {settvar #rpn# 3*((Cos(t/3)))^3 } def 0 6 pi mul settrange gsave .75 setlinewidth continu bleu (R) courbepolar grestore