Présentation de 781.jps

/syracuse/bbgraf/tmp/781.jpg
25 setxunit 7.5 setborder 90 setangle_repere -10 10 setxrange -10 10 setyrange 1 1 settkstep .5 .5 setsubtkstep 1 1 setmkstep ticks subticks marks traceaxes axesarrow /R {settvar #rpn# cos(3*t) } def 0 80 pi mul settrange gsave .75 setlinewidth continu bleu (R) courbepolar grestore